Question

1. the ability to resist a pathogen that results when an immune response to the pathogen produces memory cells is called______. a active immunity b passive immunity c both a and b d none of the above

Explanation:

Active immunity occurs when the body's immune system is exposed to a pathogen, mounts an immune response, and generates memory cells. Passive immunity involves the transfer of pre - formed antibodies (e.g., from mother to fetus via placenta or through injection of antibodies), and does not involve the body's own immune system generating memory cells.

Answer:

A. Active immunity