You would need to do this with JavaScript. Use a click handler on the Column 1 - Answer 1 checkboxes.

TomG I am aware that it will require JavaScript or JQuery. I was hoping that someone might have done this previously or that someone could point me to documentation that I can look at to figure it out. Everything that I have tried so far has not worked.

TomG - When I try the code below, the alert says "cid equals undefined". Any idea what I am doing wrong?
Qualtrics.SurveyEngine.addOnload(function()
{
   /*Place your JavaScript here to run when the page loads*/
   var cid;
   jQuery("#"+this.questionId+" inputdtype='checkbox']").on("change",function()
   {
      if (jQuery(this).prop("checked") == true)
      {
         cid = jQuery(this).closest("tr").find(".MC").attr("id");
         alert('cid equals ' + cid);
         jQuery("#" + cid + " inputdtype='checkbox']").not(this).prop("checked", false);
      }
   });
});

jQuery(this).closest("tr").find(".MC").attr("id");

TomG - Looking at the HTML I see the following for 1 row.

Access to counseling for people who have experienced

   
     
      

  
     
     
      
 

Try this (untested):
Qualtrics.SurveyEngine.addOnload(function() {
   jQuery("#"+this.questionId+" inputptype=checkbox]").click(function() {
      if(this.checked) {
var cb = jQuery(this);
cb.closest("tr").find(""type=checkbox]").not(cb).prop("checked",false);
      }
   });
});

TomG - That works. Thank you very much!!!