Please choose the correct ending to complete the given sentence: Doing crunches: A man is seen kneeling on the floor and speaking to the camera. the man

Ending1: then puts the lines themselves along the floor while still speaking to the camera. Ending2: begins going back and third with people cleaning the floor while another man follows him. Ending3: shows a shoe and begins covering it with chalk and water. Ending4: then flips over and begins doing leg exercises.

Answer format: ending1/ending2/ending3/ending4