Please choose the correct ending to complete the given sentence: Cheerleading: A group of people are on a field. they

Ending1: move in and out of the circle as they fight each other. Ending2: attach a camera to one of the player's heads. Ending3: are engaged in a game of curling. Ending4: are engaged in a game of water polo.

Answer format: ending1/ending2/ending3/ending4