$(document).ready(function(){
    console.log('jquery is installed and running.');

    //creates an array of  checkboxes
    let options = $('input[name="PotentialConsequence"]').toArray();

    //iterate through array and to confirm if checked
    $.each(options, function() {
        $(this).on('change', function() {

            for (let i=0; i<options.length; i++){
                if (options[i].checked == true){
                    continue;
                }
                options[i].disabled = true;
            }
        });
      });
});