Question

1. what is a natural, nonspecific immune response and the bodys first line of defense against antigens?

innate immunity
passive immunity
inflammation

Explanation:

Innate immunity is the body's first - line, non - specific defense. It includes physical barriers (like skin) and cells (such as macrophages). Passive immunity involves receiving antibodies (e.g., from mother to baby). Inflammation is a part of the immune response but is a more complex, later - stage reaction compared to the immediate, non - specific first - line defense of innate immunity.

Answer:

innate immunity