Question

which of the following medications is required to prevent rejection of a transplanted organ? a antihistamine b corticosteroid c protease inhibitor d immunosuppressant

Explanation:

Antihistamines are for allergic reactions, corticosteroids have multiple uses but not the main for preventing organ - rejection, protease inhibitors are for viral infections like HIV. Immunosuppressants are drugs used to prevent the immune system from attacking the transplanted organ, thus preventing rejection.

Answer:

D. Immunosuppressant