Two ways to increase an objects potential energy by chance

I believe the two ways to increase an object’s potential energy, is either by an object’s placement or by an object moving up a gradient. So the higher the object is according to its initial height, the higher the potential energy. And when an object is at a constant velocity moving up a hill, the gravitational potential is increasing, while the kinetic energy is decreasing.

The answer is 12, for the points

Answerboth technicians (a) and (b);