Please choose the correct ending to complete the given sentence: Pole vault: An outdoor track and field meet is shown. Pole vaulters are shown in a competition. some of them

Ending1: make a jump onto a balance bar. Ending2: climb up a set of rock slides. Ending3: do tricks while poles pole vault. Ending4: make their jumps while others do not.

Answer format: ending1/ending2/ending3/ending4