Answer:
The correct answer is it will decrease the ability to in and out the air of the lung which ultimately decrease the gas exchange.
Step-by-step explanation:
A muscular dystrophy is a group of disease that affects the muscular mass negatively. It affects the contraction of the muscle if reach the advanced stage. And if the contraction not takes place in throcic muscles it will decrease their ability to exchange air into and out of the lungs, decreasing gas exchange.