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".
Problem:A group of elderly people are meeting in a park. They talk and do yoga together. they <sep> (A) walk through a building into a fitness center. (B) discuss the harness. (C) kick off their shoes after yoga. (D) perform several yoga moves with the help of an instructor.
Solution:
D