Answer:
B) Matthew and Allison went to the movies after they finished their homework.
Step-by-step explanation:
The word "while" means Matthew and Allison went to the movies and finished their homework at the exact same time, which doesn't make sense, so we can cross out A.
B makes perfect sense both logically and grammatically. Leave that there.
C is incorrect; it's inefficient and stressing to watch a movie until you finish your homework. What are you going to afterwards?
At first glance, D looks like it could be correct, but it still alludes that Allison and Matthew did their homework and watched a movie at the same time. That isn't right.
Therefore, B is the correct answer.