cardiovascular digestive immune musculoskeletal
I gave my students this multiple choice question: Dr. Mendez specializes in patients who have osteoarthritis. His patients often complain of pain and swelling due to loss of cartilage. Which system is most affected by this disease?

Only one answer is correct among these 4 choices:
- cardiovascular
- digestive
- immune
- musculoskeletal

Could you tell me which one is correct?

musculoskeletal