Question

A secondary immune response differs from the primary immune response in that:

Answer 1

Answer:

Option A,  it is more rapid than the primary response and results in higher antibody levels.

Explanation:

When an antigen contacts the immunity system for the first time  it leads to a primary immune response. Since it is the first interaction, it requires more time   to produce effect.

While a secondary response occurs when the same antigen attacks the same person second , third or n number of times. During secondary response, the body already has a memory of primary immune response and thus it is faster.

Hence, option A is correct