Question

which of the following conditions is an autoimmune disease?
a kaposis sarcoma
b rheumatoid arthritis
c elephantiasis
d mononucleosis

Explanation:

Autoimmune diseases occur when the immune system attacks the body's own tissues. Rheumatoid arthritis is an autoimmune disorder where the immune system targets the joints, causing inflammation. Kaposi's sarcoma is related to a viral - infection and is often associated with AIDS. Elephantiasis is caused by parasitic worms. Mononucleosis is a viral - infection caused by the Epstein - Barr virus.

Answer:

B. rheumatoid arthritis