In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".

The medical exam for the broken arm was longer than the exam on the heart because the _ was a serious problem. (A) heart (B) arm
B

William asked Jason to teach them how to play the guitar because _ wanted to become a musician. (A) William (B) Jason
A

Jamie was applying makeup from her kit when her elbow hit the mirror, shattering it. Now, the _ is unbroken. (A) mirror (B) kit

B