The diver has the least potential energy at position.

Answer 1

At end of dive. All kinetic energy has been expended... That is, the max is while standing on the spring board and the minimum at the bottom of the dive. The extra energy content at the top of the board is converted into kinetic energy as the diver falls through the dive.

Answer 2

Thank u so much Doc48

Answer 3

You are most welcome. :-)