Please choose the correct ending to complete the given sentence: Doing crunches: A man is doing various tasks while doing crunches. he

Ending1: pauses, then begins to move among his work. Ending2: stops and talks to the camera. Ending3: is doing crunches for at least 15 hours while an audience watches. Ending4: is walking up steps and stairs as he goes.

Answer format: ending1/ending2/ending3/ending4