if (countClicks == 3){
          var r4, prox = false;
      if (document.getElementById('r7').checked || document.getElementById('r8').checked ||
          document.getElementById('r9').checked){
            prox = true;
      if (document.getElementById('r7').checked) {
          r4 = document.getElementById('r7').value;
          }
      else if (document.getElementById('r8').checked) {
        r4 = document.getElementById('r8').value;
        }
        else if (document.getElementById('r9').checked) {
        r4 = document.getElementById('r9').value;
        }
      }

      if (prox){
      $("#carouselExampleControls").carousel("next");
      $.ajax({
        type:"POST",
        url:"save.php",
        data: {cont: countClicks,r4:r4},
        success: function(data){
        }
        });
        countClicks = 4;
      }
      else{
        countClicks = 3;
        alert("Please select an option to continue");
        }

        } //End of 3