if a girl holds a ball at waist level and then lifts the ball above her head and holds it there which of the following is she doing

Increasing the ball's stored energy

Explanation:

When the girl moves the ball from the height of her waist to above her head, she is making the ball move, which is increasing the ball's kinetic energy.

The movement of a car, a person or any object has energy, this energy related to movement is called kinetic energy. A moving body, having kinetic energy, can do work when it comes in contact with another body or object and transfer energy to it. However, an object at rest can also have energy, which makes it insufficient to relate the concept of energy to movement.

She is making kinetic energy when she lifts the ball and when the ball is above her head the ball gains potential energy.