Which Answer Describes an Advantage of Having a System of Adaptive

Multiple Choice

Which answer describes an advantage of having a system of adaptive immunity?

A) It enables a rapid defense against an antigen that has been previously encountered.
B) It enables an animal to counter most pathogens almost instantly the first time they are encountered.
C) It results in effector cells with specificity for a large number of antigens.
D) It allows for the production of only a single type of antibody.