Answer: B) 0 mph
Explanation:
Velocity is a vector quantity. It can be measured as rate of change of displacement.
[tex]velocity\frac{Displacement}{time}[/tex]
Displacement is the straight path length between final and initial position of the body in motion.
It is given that the car goes from point A to point B and the returns to Point A. Hence, the net displacement of the car is 0 as the car comes back to its initial position.
Therefore, the velocity of the car is 0 mph.
Option B is correct.