Please help me this is hard

A.freeze at the same temperature at which it melts ,depending whether the temperature is rising or falling

Explanation:  When a ball rolls downhill, the gravitational potential energy of the ball is transformed into motion energy. A ball is rolling up and over a hill. The ball slows down as it moves from Position 1 to Position 3, and it speeds up as it moves from Position 3 to Position 5.

The correct answer is Only when the ball rolls from Position 3 to Position 5