Which statement best explains acceleration a. it is total distance covered over a period of time. b. it is a change in velocity over a time period c. it is a change displacement over a time period d. it’s is a change in direction

B. It is a change in velocity over a time period

Explanation:

Take into account that velocity is a vector quantity, so a change of it can be a change in magnitude (like in a vehicle which moves in a straight line an accelerates from 25 mph to 40 mph), or direction (like a vehicle describing a circular motion at 25 mph which receive a centripetal acceleration), or even a combination of both.