Most common type of arthritis, related to age or injury.

• A. Osteoarthritis
• B. Arthritis
• C. Rheumatoid arthritis
• D. Gout

Answer: (A)

The main idea is identifying the arthritis most commonly linked to aging and prior injury. Osteoarthritis is a degenerative condition driven by wear-and-tear over time and after joint damage, leading to cartilage breakdown, joint pain with use, stiffness after rest, and gradual joint space narrowing. It is the single most common form of arthritis seen in adults.

Arthritis is a broad term for joint inflammation, but it doesn’t specify the specific type. Rheumatoid arthritis is an autoimmune inflammatory arthritis, often with symmetrical small-joint involvement and systemic features, not the most common form. Gout is caused by uric acid crystal deposition, producing acute inflammatory attacks, typically in the big toe, and is related to metabolic factors rather than aging and general wear-and-tear.