Which of the following is NOT a complete sentence?

A. Throwing the ball to the pitcher.
B. That baby cries and cries.
C He sometimes steals things.
D. I don't know the answer to this one.

Which of the following is not a complete sentence? A. throwing the ball to the pitcher B. that baby cries and cries3 he some times steals things. D. I don't know the answer to this one