which of the following passages from Johnny tremain identifies a key event in the plot?

A. "I'll buy your unexpired time. I think between us we could make some fine things you and I." The boy flushed. To thin the great Paul Revere wanted him
B His feet went out from under him. He came down on the top of the furnace. The burn was so terrible he at first felt no pain, but stood stupidly looking at his hand
C By saturday noon, Johnny, following Mr. Revere's advice and his curve, had got the model of the handle exactly right. He could tell with his eyes closed.
D Every morning he put on the heavy wooden yoke, trudged over to North Square for drinking water. Now for the first time he learned to handle a broom properly.
is it c?