Which systems are involved with the breakdown and delivery of nutrients from recently eaten food to the cells and the removal of waste materials from the body? A. digestive, nervous, and endocrine B. excretory, skeletal, and digestive C. digestive, circulatory, and excretory D. excretory, circulatory, and nervous

The correct answer is Choice C.

digestive, circulatory, and excretory

Explanation:

Hope this helps!

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.