Software interaction quiz question

My first instinct is to use one slide with layers, rather than states. (My second thought is that 22 triggers and 6 variables is a pretty simple slide, not at all complex.)  Any place you can click will bring up the appropriate feedback layer, which can be set to disappear after a set time. 

There are a lot of ways to do this. If you are planning on progressing through a series of different screens when the correct spot is clicked, you can use states for the background picture, or use different graphics that appear and disappear, or you can use a combination of layers . The correct click brings up the new layer, the incorrect brings up a feedback layer that doesn't hide other layers, but does hide itself after an appropriate time.