Question

1. long - term resistance to chicken pox acquired after infection with chicken pox virus

a. agglutination
b. acclimation
c. passive immunity
d. allergic reaction
e. active immunity

Explanation:

When infected with chicken - pox virus, the body's immune system produces its own antibodies and memory cells, which is active immunity. Agglutination is a clumping reaction, acclimation is adaptation to environment, passive immunity comes from external antibodies, and allergic reaction is an over - reaction of immune system to non - harmful substances.

Answer:

E. Active immunity