Final answer:
The correct department that deals with musculoskeletal disorders is Rheumatology (option A), manned by rheumatologists and orthopedists who specialize in diseases like arthritis and treatments including surgery and sports medicine.
Step-by-step explanation:
The hospital unit specializing in musculoskeletal disorders—which include conditions affecting bones, joints, ligaments, and tendons—is run by rheumatologists and orthopedists. Rheumatologists are medical doctors trained in the diagnosis and treatment of rheumatic diseases such as arthritis, musculoskeletal disorders, osteoporosis, and autoimmune diseases like ankylosing spondylitis and rheumatoid arthritis.
Whereas, orthopedists focus on the musculoskeletal system as a whole, including its surgery and may deal with sports medicine that includes treatment for injuries like a sprained ankle or a torn rotator cuff in the shoulder. Therefore, the correct answer to the question is A. Rheumatology.