Please choose the correct ending to complete the given sentence: River tubing: People are floating on inflated tires. A guy swims across the body of water. A lady puts her hand in front of the camera. people

Ending1: are walking off the diving board on water skis. Ending2: are standing in a shallow part of the body of water, and a guy falls into the water. Ending3: are standing in the pool. Ending4: is floating on inflated tires in a boat.

Answer format: ending1/ending2/ending3/ending4