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: I am a tiny, black animal with 6 legs. I am 
Completion A: a beetle 
Completion B: a cat 
Completion C: an ipad 
Completion D: a dog

A: Completion A
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Q: Prompt: After learning that a curveball was the batter's Achilles' heel, the pitcher 
Completion A: named his dog "Curveball." 
Completion B: decided to visit Greece. 
Completion C: played baseball every day for the rest of his life. 
Completion D: decided to only throw that pitch.

A: Completion D
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Q: Prompt: A professor takes out his red pen and some papers. The professor 
Completion A: wraps the papers around the pen several times. 
Completion B: makes a paper airplane with the papers and pen. 
Completion C: writes on the blackboard. 
Completion D: starts grading exams.

A:
Completion D
****