Please choose the correct ending to complete the given sentence: Waterskiing: A person is water skiing behind a boat. they

Ending1: start to crash a car and get lost in many trees. Ending2: are going back and forth behind the boat. Ending3: jump off the side of the boat and are seen underwater. Ending4: start to ski down a trail together.

Answer format: ending1/ending2/ending3/ending4