Added -- at start of each select

main/survey/ch_dropdown.php

@@ -33,8 +33,8 @@ class ch_dropdown extends survey_question
     public function render(FormValidator $form, $questionData = array(), $answers = '')
     {
         $name = 'question' . $questionData['question_id'];
+        array_unshift($questionData['options'], '--');
         $form->addSelect($name, null, $questionData['options']);
-
         if (!empty($answers)) {
             $form->setDefaults([$name => $answers]);
         }

main/survey/ch_score.php

@@ -35,7 +35,9 @@ class ch_score extends survey_question
     {
         $defaults = [];
         foreach ($questionData['options'] as $key => & $value) {
-            $options = array();
+            $options = array(
+                '--' => '--'
+            );
             for ($i=1; $i <= $questionData['maximum_score']; $i++) {
                 $options[$i] = $i;
             }