The diagram below shows the orbit of a comet around the sun point a is farthest from the sun and point e is closest to the sun. the comet moves counterclockwise. at what point in its orbit does the comet have the greatest potential energy? at what point does it have the least potential energy?

The greatest amount of potential energy is at the point where the comet is farthest away and the least amount is at the point where it is closest.
This is because the further away it is from the star, the less gravity is acted upon it and thus, it has more potential energy.
As it gets closer and closer to the star, more and more gravity acts upon it and it speeds up, thus having the potential energy converted to kinetic energy.

Less force and energy was applied