What happens next in this paragraph?

A machine is shown sitting in a living room floor. A man sits on the equipment and straps it onto his feet. he
Choose your answer from:
I. then demonstrates how to pulll the cord and move his body up and down the machine.
II. then clips his hair and sprays shaving cream on it.
III. stands up, holding the weight.
IV. turns off the machine and begins walking up steps.
I.