Why does the number of phagocytes and lymphocytes in the body increase during an infection? a. more phagocytes and lymphocytes are needed to fight the infection. b. disease-causing microorganisms produce phagocytes and lymphocytes. c. antibodies produce more phagocytes and lymphocytes. d. red blood cells are decreasing. e. the body has become immune to the infection.

A. More phagocytes and lymphocytes are needed to fight the infection.

Phagocytes and lymphocytes are basically the white blood cells in our body that are used to fight off infections and diseases. Naturally, your body would want to create more to close up a wound if you got a simple cut, but to have that become infected or for you to generally have an infection, there's going to be a larger demand for them. Diseases and infections bring bacteria and foreign invaders into your body, so you will want more phagocytes and lymphocytes to fight them all off and return back to your health.