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.

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.
Completion D

Prompt: Kelly is the keyboard in the band. She 
Completion A: broke a cap the other day. 
Completion B: types really fast. 
Completion C: plays well. 
Completion D: writes a lot of books.
Completion C

Prompt: four plus five is 
Completion A: five 
Completion B: four 
Completion C: nine 
Completion D: once

Completion C