What are two differences between healthy muscles and muscles with DMD

Weakness in muscles with DMD as well as impaired pulmonary function

Explanation:

Muscle weakness is the principal symptom of DMD.

i would definitly say b : )

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.