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".

[Q]: During the lecture Emily gave all kinds of examples of different species while Monica took notes because _ wanted to teach well. (A) Emily (B) Monica
[A]: A

[Q]: Joel spends a lot more time sitting down than Donald because _ works in an office. (A) Joel (B) Donald
[A]: A

[Q]: The children of Nelson are sadder than Justin's because _ takes them on a vacation every month. (A) Nelson (B) Justin
[A]:
B