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".

Jeffrey took the time to caulk their windows but Robert didn't bother. _ saw their electric bill decrease. (A) Jeffrey (B) Robert
A

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

They wanted an apartment in the city but decided to buy a house in the countryside, because the _ is too cramped. (A) apartment (B) house
A