Whenever the motion of an object has been applied.

Whenever the motion (speed or direction) of an object changes, we say that acceleration has occurred.  From Newton's First Law of Motion, we know that force has been applied to the object.

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                                         : )

neither accurate nor precise.