The second phase of the body's immune response to a foreign substance involves ________ of the body's defenses.
A) recognition
B) attack
C) activation
D) all of the above

Question

Quizplus · Accepted Answer

The second phase of the immune response is the activation phase, in which the body's defenses (such as the production of specific antibodies and immune cells) are mobilized to attack the foreign substance. Recognition and attack can be part of this phase, but activation is the key process that leads to effective immune response.

The Second Phase of the Body's Immune Response to a Foreign