3. Which type of WBC produces will consume pathogens and is know as the "Big Eater"? *
Mastocyte
B Cells
NK Cell
Macrophage

The correct answer is - macrophage.

Explanation:

Macrophages are the white blood cells that are phagocytic in nature and involve in the detection and destruction of the microbes such as bacteria. The macrophage is a Greek word that means large eater or big eater that explains its cell eating property.

Macrophages do not eat the microbes or pathogens but engulf them to destroy them. These cells move around like scavengers to find and destroy the dead cells and pathogens by engulfing them and destroy them with nitric acid.