Which of the following does work?
A. An apple growing on a tree.
B. An apple on a table.
C. An apple being pushed across the floor.

C. An apple being pushed across the floor

Explanation:

Do do work, the direction of the force and the motion of the object has to be the same. For example, holding an apple in the air isn’t doing work because the Apple is motionless but the force is going upward from your hand to hold it up. But if you hold the Apple and push it upward then it does work because it is moving upward and you are also pushing upward. Hope this helps!

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.