Worn-out red blood cells and tiny harmful bacteria are ingested by an immune system agent known as the:a. reticular formation. b. amygdala. c. macrophage. d. glucocorticoid. e. B lymphocyte.

c. macrophage.

Explanation:

The worm out red blood cells a tiny harmful bacteria that are in digested by the immune system agents is know as a macrophages. And its a large phagocyte cell that is responsible for the formation of the immune system and can be mobile white blood cells. All these cells have the ability to find and eat the particles such as the bacteria and fungi and parasites.