The correct option is A Wearing down of cartilage
Osteoarthritis is a joint disease that mostly affects cartilage.
A sprain, also known as a torn ligament.
Rheumatoid arthritis causes the normally thin synovial membrane (synovium) to become inflamed and thickened, leading to an accumulation of synovial fluid and causing pain and swelling.
Deposits of the needle-like urate crystals are responsible for the inflammation and the painful symptoms of gouty arthritis.