Detailed Instructions: Given a prompt and four completions, select the completion that is the most plausible in continuing or answering the prompt. This task is designed to test common sense and has various categories ranging between idioms, negated statements, polysemy, subject referencing, and quantitative reasoning. Generate either Completion A, Completion B, Completion C, or Completion D.
Q: Prompt: The use of drugs during athletic festivals is evident. But, they
Completion A: must run away from the festival.
Completion B: must make sure that any product or medication they take does not contain a prohibited substance.
Completion C: performed in olympics
Completion D: won many medals
A:
Completion B