Answer: Maximum potential energy is at point R
Explanation:
A basic way to think this type of problem is that, when the ball is in the maximal height, the potential energy of the ball is maximized.
As the ball raises, there is a conversion of kinetic energy into potential energy, and as the ball falls down, the potential energy ins transformed into kinetic energy.
So the right statement would be the third option
"Maximum potential energy is at point R"
