Answer: It has the greatest Potential energy when the ball reaches its highest point.
Explanation: Potential energy is the energy that an object possesses due to its position or state, which can be converted into work or kinetic energy when acted upon by a force.
There are three types of Potential Energy such as :
Elastic Potential Energy: Anything that can act like a spring or a rubber band can have elastic potential energy
Gravitational Potential Energy: There is a constant attractive force between the Earth and everything surrounding it, due to gravity
Chemical Potential Energy.