- 1 4 tem 4. Which statement describes how our diaphragm works during exhalation? ablod A. It relaxes to increase space in the body, thus expelling air from the body. B. It relaxes to decrease space in the body, thus expelling air from the body. C. It contracts to increase space in the body, thus expelling air from the body. D. It contracts to decrease space in the body, thus expelling air from the body,