Define reversibility training. pls answer quick

any adaptation that takes place as a result of training will be reversed when you stop training. If you take a break or don't train often enough you will lose fitness.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

a electromagnetic waves