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".

Ian told Donald that he was going to try eating amaranth in order to improve _ diet. (A) Ian (B) Donald
A

When it comes to cooking, Elena takes more time to prepare food than Sarah because _ pay more attention to details. (A) Elena (B) Sarah
A

Samuel ate a great deal of rice but Matthew did not because _ was trying to decrease their carb consumption. (A) Samuel (B) Matthew

B