Multiple Fill-in-the-Blank Quiz Question

The trigger to Submit the question comes before the triggers that select the answer shape. Triggers fire in order, so that means neither answer is selected when the Submit Pick One trigger runs. 

Just move the Submit Pick One trigger so it comes last, and it'll work.

By the way, you could delete one of the triggers if you add an Else statement: 

To the user, it doesn't really matter if you use two triggers or one trigger with an Else statement; the result is the same. But it can help prevent errors, since you only have to enter the conditions once.