Question

question 1
which of the following medications helps to block an allergic reaction?
a antihistamine
b corticosteroid
c protease inhibitor
d immunosuppressant

Explanation:

Antihistamines work by blocking histamine, a chemical released during allergic reactions. Corticosteroids reduce inflammation, protease inhibitors target proteases (not directly related to allergic - reaction blocking), and immunosuppressants suppress the immune system in general, not specifically for blocking allergic reactions quickly.

Answer:

A. antihistamine