Code for XML :-

<data>

    <title><![CDATA[<b>Match The Pairs</b>]]></title>

    <question><![CDATA[Match each step of the code change process with its order of occurrence.]]></question>
    
    <instruction><![CDATA[<font color="#990000">Match each step description given below with its appropriate step number. Click <b>Check My Answer</b> when you are done.</font>]]></instruction>
    
    <column_titles>
            <title><![CDATA[<b>Step Description</b>]]></title>
            <right_title><![CDATA[<b>Step Number</b>]]></right_title>
    </column_titles>
    <left_column_content>
        <text value="7" color="0x009900"><![CDATA[STEP 1]]></text>
        <text value="5" color="0x663300"><![CDATA[STEP 2]]></text>
        <text value="8" color="0x996699"><![CDATA[STEP 3]]></text>
        <text value="6" color="0xFF6600"><![CDATA[STEP 4]]></text>
        <text value="4" color="0x0066ff"><![CDATA[STEP 5]]></text>
        <text value="2" color="0x0000ff"><![CDATA[STEP 6]]></text>
        <text value="3" color="0x990000"><![CDATA[STEP 7]]></text>
        <text value="1" color="0x006600"><![CDATA[STEP 8]]></text>
                
    </left_column_content>
    
    <right_column_content>
        <text value="1"><![CDATA[Step 1]]></text>
        <text value="2"><![CDATA[Step 2]]></text>
        <text value="3"><![CDATA[Step 3]]></text>
        <text value="4"><![CDATA[Step 4]]></text>
        <text value="5"><![CDATA[Step 5]]></text>
        <text value="6"><![CDATA[Step 6]]></text>
        <text value="7"><![CDATA[Step 7]]></text>
        <text value="8"><![CDATA[Step 8]]></text>
    </right_column_content>
    
    
    <feedback>
        <correct_feed><![CDATA[<b>Correct</b>.<br><br>All your answers are correct.]]></correct_feed>
        <incorrect_feed><![CDATA[<B>Incorrect</B>.<br><br>One or more of your answers are incorrect. Click Solution to view the answers.]]></incorrect_feed>
    </feedback>
    
    

</data>

Code in Flash File

1) XML Parsing :-

stop();
this._visible = false;
xmlObject = new XML();
xmlObject.ignoreWhite = true;
xmlObject.onLoad = fn_ParseData;
xmlObject.load("MTF.xml");

var pageTitle,correctFeed,incorrectFeed;
var leftContent = new Array();
var rightContent = new Array();


function fn_ParseData() {
    var firstcld = xmlObject.firstChild;
    fn_parse(firstcld);
}

function fn_parse(level2)
{

    for(var i=0;i<level2.childNodes.length;i++)
    {
        if(level2.childNodes[i].nodeName == "title")
        {
             var level3 =level2.childNodes[i];
             pageTitle = level3.childNodes[0].nodeValue;
        }
        else if(level2.childNodes[i].nodeName == "instruction")
        {
             var level3 =level2.childNodes[i];
             dtxt_instruction.htmlText = level3.childNodes[0].nodeValue;
            
        }
        else if(level2.childNodes[i].nodeName == "question")
        {
             var level3 =level2.childNodes[i];
             Question_txt.htmlText = level3.childNodes[0].nodeValue;
        }
        else if(level2.childNodes[i].nodeName == "left_column_content")
        {
             var level3 =level2.childNodes[i];
             for(var j=0;j<level3.childNodes.length;j++)
             {
                leftContent[j] = new Object();
                
                leftContent[j].value = level3.childNodes[j].attributes.value;
                leftContent[j].color = level3.childNodes[j].attributes.color;
                leftContent[j].text = level3.childNodes[j].childNodes[0].nodeValue;
             }
        }
        else if(level2.childNodes[i].nodeName == "right_column_content")
        {
             var level3 =level2.childNodes[i];
             for(var j=0;j<level3.childNodes.length;j++)
             {
                rightContent[j] = new Object();
                
                rightContent[j].value = level3.childNodes[j].attributes.value;
                rightContent[j].text = level3.childNodes[j].childNodes[0].nodeValue;
             }
        }
        else if(level2.childNodes[i].nodeName == "column_titles")
        {
             dtxt_leftTitle.htmlText  = level2.childNodes[i].childNodes[0].childNodes[0].nodeValue;
             dtxt_rightTitle.htmlText  = level2.childNodes[i].childNodes[1].childNodes[0].nodeValue;
        }
        else if(level2.childNodes[i].nodeName == "feedback")
        {
            correctFeed   = level2.childNodes[i].childNodes[0].childNodes[0].nodeValue;
            incorrectFeed = level2.childNodes[i].childNodes[1].childNodes[0].nodeValue;
        }
    }
    
dtxt_instruction.autoSize = true;
dtxt_instruction._y = Question_txt._y + Question_txt._height + 5;
mc_background._y = dtxt_instruction._y  -2;
mc_background._x = dtxt_instruction._x  -2;
mc_background._height = dtxt_instruction._height  +2;

dtxt_leftTitle._y = mc_background._y + mc_background._height+15;
dtxt_rightTitle._y = dtxt_leftTitle._y;    

play();
}

2) Functional Code :-

var lastLeftSelected = undefined, lastRightSelected = undefined;
var enableRight = false;
function fn_initialize() {
    var y_start = dtxt_leftTitle._y+dtxt_leftTitle._height + 5;
    var toAdd = y_start;
    var Gap = 5;
    for (var i = 0; i<leftContent.length; i++) {
        var tempStr = "mc_leftColumn"+i;
        mc_leftColumn.duplicateMovieClip(tempStr, 500+i);
        var tempMc = eval(tempStr);
        tempMc.number = leftContent[i].value;
        tempMc.color = leftContent[i].color;
        tempMc.refOfRightContent = null;
        tempMc._x = 49;
        tempMc._y = toAdd;
        tempMc.dtxt.autoSize = true;
        tempMc.dtxt.text = leftContent[i].text;
        toAdd = (tempMc._y+tempMc._height+Gap);
        tempMc.mc_radio.mc_dot._visible = false;
        tempMc.btn.onPress = fn_leftColumnSelected;
        createEmptyMovieClip("Scene"+i, 700+i);
        tempMc.scene = eval("Scene"+i);
    }
    var y_start = dtxt_leftTitle._y+25;
    var toAdd = y_start;
    for (var i = 0; i<rightContent.length; i++) {
        var tempStr = "mc_rightColumn"+i;
        mc_rightColumn.duplicateMovieClip(tempStr, 600+i);
        var tempMc = eval(tempStr);
        tempMc._x = 500;
        tempMc._y = toAdd;
        tempMc.dtxt.autoSize = true;
        tempMc.dtxt.text = rightContent[i].text;
        toAdd = (tempMc._y+tempMc._height+5);
        tempMc.number = rightContent[i].value;
        tempMc.mc_radio.mc_dot._visible = false;
        //tempMc.btn.onPress = fn_rightColumnSelected;
        tempMc.btn.enabled = false;
        tempMc.refOfLeftContent = null;
    }
    createEmptyMovieClip("forSwapDepths", 850);
    mcFeedback.swapDepths(forSwapDepths);
    done_reset._y = toAdd-5;
    done_reset._x = 760;
}
function fn_leftColumnSelected() {
    lastLeftSelected.mc_radio.mc_dot._visible = false;
    var parent = this._parent;
    parent.mc_radio.mc_dot._visible = true;
    lastLeftSelected = parent;
    if (enableRight == false) {
        enableRight = true;
        fn_enableRightButtons();
    }
    if (lastLeftSelected.refOfRightContent == lastRightSelected) {
        lastLeftSelected.scene._visible = false;
        lastLeftSelected.refOfRightContent.refOfLeftContent = null;
        lastLeftSelected.refOfRightContent = null;
    }
    fn_enableDisable();
}
function fn_rightColumnSelected() {
    lastRightSelected.mc_radio.mc_dot._visible = false;
    var parent = this._parent;
    parent.mc_radio.mc_dot._visible = true;
    lastRightSelected = parent;
    if (lastRightSelected.refOfLeftContent == null) {
        fn_drawLine();
        lastRightSelected.refOfLeftContent = lastLeftSelected;
        lastLeftSelected.refOfRightContent.refOfLeftContent = null;
        lastLeftSelected.refOfRightContent = lastRightSelected;
    } else if (lastRightSelected.refOfLeftContent == lastLeftSelected) {
        lastRightSelected.refOfLeftContent.scene._visible = false;
        lastRightSelected.refOfLeftContent.refOfRightContent = null;
        lastRightSelected.refOfLeftContent = null;
        trace("in this condition");
    }
    fn_enableDisable();
}
function fn_enableRightButtons() {
    for (var i = 0; i<rightContent.length; i++) {
        var tempStr = "mc_rightColumn"+i;
        var tempMc = eval(tempStr);
        tempMc.btn.enabled = true;
        tempMc.btn.onPress = fn_rightColumnSelected;
    }
}
function fn_validate() {
    var allCorrect = true;
    for (var i = 0; i<rightContent.length; i++) {
        var tempStr = "mc_leftColumn"+i;
        var tempMc = eval(tempStr);
        if (tempMc.number == tempMc.refOfRightContent.number) {
            tempMc.mc_radio.mc_remark.gotoAndStop("tick");
        } else {
            tempMc.mc_radio.mc_remark.gotoAndStop("cross");
            allCorrect = false;
        }
    }
    if (allCorrect == false) {
        mcFeedback.gotoAndStop("lbl_solution");
        mcFeedback.feedback_text.htmlText = incorrectFeed;
    } else {
        mcFeedback.gotoAndStop("lbl_close");
        mcFeedback.feedback_text.htmlText = correctFeed;
    }
    fn_disableAllButton();
}
function fn_disableAllButton() {
    done_reset.gotoAndStop(1);
    for (var i = 0; i<rightContent.length; i++) {
        var tempStr = "mc_rightColumn"+i;
        var tempMc = eval(tempStr);
        tempMc.btn.enabled = false;
    }
    for (var i = 0; i<leftContent.length; i++) {
        var tempStr = "mc_leftColumn"+i;
        var tempMc = eval(tempStr);
        tempMc.btn.enabled = false;
    }
}
function fn_drawLine() {
    temp = lastLeftSelected.scene;
    temp._visible = true;
    var_color = lastLeftSelected.color;
    temp.clear();
    temp.beginFill(var_color, 100);
    temp.lineStyle(0, var_color, 100);
    var point = new Object();
    point.x = lastLeftSelected.mc_radio.mc_dot._x;
    point.y = lastLeftSelected.mc_radio.mc_dot._y;
    lastLeftSelected.mc_radio.localToGlobal(point);
    temp._x = 0;
    //point.x;
    temp._y = 0;
    //point.y;
    temp.moveTo(point.x, point.y);
    point.x = lastRightSelected.mc_radio.mc_dot._x;
    point.y = lastRightSelected.mc_radio.mc_dot._y;
    lastRightSelected.mc_radio.localToGlobal(point);
    temp.lineTo(point.x, point.y);
    temp.lineTo(point.x, point.y+1);
    point.x = lastLeftSelected.mc_radio.mc_dot._x;
    point.y = lastLeftSelected.mc_radio.mc_dot._y;
    lastLeftSelected.mc_radio.localToGlobal(point);
    temp.lineTo(point.x, point.y+1);
    temp.lineTo(point.x, point.y);
    temp.endFill();
}
function fnShowAnswers() {
    for (var i = 0; i<rightContent.length; i++) {
        var tempStr = "mc_leftColumn"+i;
        var tempMc = eval(tempStr);
        tempMc.mc_radio.mc_remark.gotoAndStop(1);
        lastLeftSelected = tempMc;
        tempMc.number--;
        lastRightSelected = eval("mc_rightColumn"+tempMc.number);
        trace("lastLeftSelected   "+lastLeftSelected);
        fn_drawLine();
    }
}
function fn_enableDisable() {
    for (var i = 0; i<rightContent.length; i++) {
        var tempStr = "mc_rightColumn"+i;
        var tempMc = eval(tempStr);
        trace("i = "+i+" "+tempMc.refOfLeftContent);
        if (tempMc.refOfLeftContent == null) {
            break;
        }
    }
    if (i == rightContent.length) {
        done_reset.gotoAndStop(2);
        done_reset.btn_submit.onRelease = fn_validate;
    } else {
        done_reset.gotoAndStop(1);
    }
}

fn_initialize();
this._visible = true;