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: A crowd of runners are gathered near the starting line for a race. They
Completion A: walk across the starting line.
Completion B: wait for the signal to begin.
Completion C: run across the finish line.
Completion D: eat their shoes.
A:
Completion B