Locking Multiple Choice with Images

I used a disabled sketch pad to mimic the multiple choices to lock an answer in but still show it. In order to use your own images one would need to replace them in the sketch. Each image is centered in one of the 4 quadrants, for example the second choice is centered at `\left(5,5\right)`. The answer choice box is `10\ x\ 10`. Adjust as needed.

By Stein Schreiber