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".

Mark liked drawing so he took art classes instead of music lessons because the _ he would know what to expect. (A) art classes (B) music lessons
A

Aaron was always skipping leg day at the gym but Derrick never missed it. _ had very skinny legs. (A) Aaron (B) Derrick
A

The man wrote letters in the Army, but didn't send packages. That's because it is expensive to send _ . (A) letters (B) packages
B