Jack pushed and pushed, but no matter how hard he tried, the refrigerator would not budge! what is the best explanation of what happened? a) jack exerted a force and did work. b) jack had no energy and did no work. c) jack used all his potential energy to do work. d) the refrigerator did not move so no work was done.

D)The refrigerator did not move so no work was done.

Explanation:

The refrigerator did not move so no work was done. Jack did exert a force and he did have energy. His muscles were twitching and using stored chemical energy. No work is done, though, if the force or energy does not cause an object to move. No movement, no work.