The body's defense mechanism against infection is referred to as what?

The body's defense mechanism against infection is referred to as what?

• A. Immune
• B. Antibody
• C. Innate immunity
• D. Immunodeficiency

Answer: (A)

The body's defense against infection is the immune system, a coordinated network of cells, tissues, and organs that detects and fights pathogens. The word immune describes this overall defense capability. An antibody is just one tool within that system—it's a specific protein that helps neutralize particular invaders. Innate immunity refers to a fast, nonspecific part of the defense, not the entire system. Immunodeficiency describes a weakened or absent immune function, not the defense mechanism itself. So immune is the best fit because it denotes the body's complete defense mechanism against infection.

The body's defense against infection is the immune system, a coordinated network of cells, tissues, and organs that detects and fights pathogens. The word immune describes this overall defense capability. An antibody is just one tool within that system—it's a specific protein that helps neutralize particular invaders. Innate immunity refers to a fast, nonspecific part of the defense, not the entire system. Immunodeficiency describes a weakened or absent immune function, not the defense mechanism itself. So immune is the best fit because it denotes the body's complete defense mechanism against infection.