Prefabs for first 2 questions

Assets/Scripts/ObjectController.cs

@@ -1,16 +1,19 @@
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.UI;
 
 public class ObjectController : MonoBehaviour {
-
+    public RawImage imageCorrect;
+    public RawImage imageIncorrect;
 	// Use this for initialization
 	void Start () {
-		
+        imageCorrect.enabled = false;
+        imageIncorrect.enabled = false;
 	}
 	
 	// Update is called once per frame
 	void Update () {
-		
+
 	}
 }