Which of the following statements about the extreme position of a swinging simple pendulum is true?

The extreme position of a swinging simple pendulum refers to the point where the pendulum bob is at its highest point in the swing, farthest away from the mean position where it is at rest. 

Potential energy is associated with the height or position of an object above a reference point. When the bob is at an extreme position, it has maximum potential energy due to its elevated height. 

On the other hand, the kinetic energy of the pendulum bob is at its lowest point in the extreme position. Kinetic energy is associated with motion, and as the pendulum reaches its highest point, its velocity decreases, resulting in lower kinetic energy.

Therefore, in the extreme positions of a swinging simple pendulum, it is true that the pendulum bob has only potential energy and no kinetic energy.