Answer:
Lubricates joints and body cells
Cardiorespiratory endurance is a measurement of how well your heart, lungs and muscles work together to keep your body active over an extended period of time. Exercisers can improve cardiorespiratory endurance by participating in a program of regular aerobic exercise.
The answer to this question is D. Because when a woman is pregnant she goes to a OB/GYN. The GYN meaning Gynecologist. Hope I helped!