Please try adding this script to your select question and see if it satisfies your needs:
<script>
$(window).on('load', function(){
var adjustSizes = function(){
$('#[% QuestionName() %]_div .clickable').height('auto');
if ($('#[% QuestionName() %]_div .response_column:nth-child(1)').position().top == $('#[% QuestionName() %]_div .response_column:nth-child(2)').position().top) {
for (var row = 1; row <= $('#[% QuestionName() %]_div .response_column:first-child .clickable').length; row++) {
var clickables = $('#[% QuestionName() %]_div .response_column > .clickable:nth-child(' + row + ')');
var maxHeight = 0;
$(clickables).each(function(){
maxHeight = Math.max(maxHeight, $(this).height());
});
$(clickables).height(maxHeight);
}
}
};
$(window).resize(adjustSizes);
adjustSizes();
})
</script>