The answer is b thank and rate my answer for 30 points they come in in 35 minutes
Muscular dystrophy is a muscle disease that causes a loss in muscle mass and weakness. Patients with muscular dsytrophy may experience a weakening in their cardiac muscles, causings heart malfunction. Muscular dystrophy can also deteriorate the diaphragm, a muscle that solely aids in respiration, causing a breathing malfunction.
Answer: C
one grade level because they made up many groups of students