Is a painful degeneration of movable joints caused by attacks on the joints by the cells of the immune system.
a. a sprain
b. osteoarthritis
c. rheumatoid arthritis
d. anterior cruciate ligament damage

Rheumatoid arthritis causes this. It's also a chronic disease.

A sprain is an injury to a ligament.

Osteoarthritis is a joint disease caused by the inflammation, breakdown and loss of the cartilage.

Anterior cruciate ligament damage is the injury to this ligament.

Hope this helps :).

c.rheumatoid arthritis

Explanation:

Rheumatoid arthritis is an autoimmune disorder that affects the joints and leads to their swelling and result s in a lot of pain. The joints of the hands and wrists are most commonly involved however there is a possibility that other parts of the body may also get affected which may lead to inflammation around the hearts and lungs along with a decrease in the red blood cell count. The cells of the immune system attack the joints in this disorder due to which there is inflammation and thickening of the joints.