Which statement best describes Multiple Sclerosis (MS)?

Which statement best describes Multiple Sclerosis (MS)?

• A. Destruction of the myelin sheath causing communication problems between the brain and body.
• B. A degenerative bone disease.
• C. A genetic heart condition.
• D. An acute infection of the lungs.

Answer: (A)

Multiple Sclerosis is a central nervous system disease in which the immune system attacks the myelin that insulates nerve fibers. When myelin is damaged, nerve signals travel more slowly or become disrupted, leading to communication problems between the brain and body. This is why MS commonly causes symptoms like numbness or tingling, weakness, balance and coordination issues, vision problems, and fatigue. The statement correctly describes the fundamental issue—destruction of the myelin sheath causing impaired brain–body communication. The other options describe conditions that are not about nerve signal transmission: a degenerative bone disease involves bones, a genetic heart condition involves the heart, and an acute lung infection involves the lungs.

Multiple Sclerosis is a central nervous system disease in which the immune system attacks the myelin that insulates nerve fibers. When myelin is damaged, nerve signals travel more slowly or become disrupted, leading to communication problems between the brain and body. This is why MS commonly causes symptoms like numbness or tingling, weakness, balance and coordination issues, vision problems, and fatigue. The statement correctly describes the fundamental issue—destruction of the myelin sheath causing impaired brain–body communication.

The other options describe conditions that are not about nerve signal transmission: a degenerative bone disease involves bones, a genetic heart condition involves the heart, and an acute lung infection involves the lungs.