Please choose the correct ending to complete the given sentence: Pole vault: A boy prepares to do a high jump in a gym. he

Ending1: jumps high into the air and lands in the sand. Ending2: takes off running with the high jump stick. Ending3: goes forward and back three times quickly. Ending4: does it four times while other boys practice.

Answer format: ending1/ending2/ending3/ending4