Answers for "select remove option with disabled"

html select option disabled selected

<option selected disabled>Choose Tagging</option>

disable other options in select except the selected

$("#lbCountries").click(function () {
     $("#lbCountires option").each(function (index) {
        if ($(this).is(':selected')) {
            $(this).prop('disabled', false);
         }
         else {
            $(this).prop('disabled', true);
         }
      });
  });