Please choose the correct ending to complete the given sentence: Kneeling: He demonstrates on how to properly do exercises on an elastic band that is attached to a fixed pole. he

Ending1: kneels and demonstrates watching his legs bounce and the fabric of the elastic band on his chest. Ending2: demonstrates on a prosthetic legs while speaking to the camera. Ending3: shows different poses, some ways of doing a long jump and using the elastic band and swing poles. Ending4: grabs the elastic band and pulls it towards himself.

Answer format: ending1/ending2/ending3/ending4