The diagram shows a ball falling toward Earth in a vacuum. Why is the distance traveled between seconds 3 and 4 greater than the distance traveled between seconds 1 and 2?

A. The force on a falling object decreases as it falls.

B. The object must push the air out of the way as it falls.

C. An object falling due to gravity moves faster every second.

D. An object slows down as it falls towards Earth.