Detailed Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Q: Men are lifting heavy weights over their head several times. A man in a blue shirt is watching one of the men. a man in a gray shirt <sep> (A) is watching the men on the ground. (B) hits a big weight in slow motion. (C) is talking to one of the men in the middle of the gym. (D) is mimicking the person lifting the weight.
A:
D