please help me, i’ll give brainlist and points please don’t be one of those people that go “link below”

The answer is 4.

Explanation:

First step :)

A way to increase the gravitational potential energy between yourself and the earth would be to stand on a plank stretched over a gap between two cinder blocks. The energy would transform from potential to kinetic if you were to fall or the plank were to give out.
Hope that helped =)