The correct response to describe the relationship between the potential energy and kinetic energy of a baseball when it is thrown is:
As the ball’s potential energy decreases, its kinetic energy increases.
When the baseball is at rest, it has potential energy due to its position. When it is thrown, that potential energy is converted into kinetic energy, which causes the ball to move. Thus, as potential energy decreases (when the ball is released), kinetic energy increases (as the ball gains speed).