Immunity is the body's ability to

Immunity is the body's ability to

• A. Destroy and resist infection
• B. Clean surfaces
• C. Disinfect
• D. Sterilize

Answer: (A)

Immunity is the body's ability to destroy and resist infection. It encompasses the body's internal defense system—barriers like skin, immune cells such as white blood cells, antibodies, and memory cells that recognize and neutralize pathogens. When invaders slip in, the immune response works to eliminate them and can even provide lasting protection by remembering previous encounters. This concept is about the body's internal defense, not external hygiene practices. Cleaning surfaces, disinfecting, and sterilizing are ways to reduce or eliminate microbes on nonliving objects or tools, not descriptions of how the body itself fights infection.

Immunity is the body's ability to destroy and resist infection. It encompasses the body's internal defense system—barriers like skin, immune cells such as white blood cells, antibodies, and memory cells that recognize and neutralize pathogens. When invaders slip in, the immune response works to eliminate them and can even provide lasting protection by remembering previous encounters.

This concept is about the body's internal defense, not external hygiene practices. Cleaning surfaces, disinfecting, and sterilizing are ways to reduce or eliminate microbes on nonliving objects or tools, not descriptions of how the body itself fights infection.