B) B. is the point where it has maximum potential energy.
Explanation:
This an example of projectile motion.
In projectile motion, the path of an object is illustrated in the picture given. In the given picture, the minimum kinetic energy and the maximum potential energy is at B
B is the point where the object, for example, the ball is reaching its point of minimum kinetic energy which means that after this point the object's downward motion starts.
Hence, the transition from the upward motion to the downward motion is the point where it has the maximum potential energy.
