What role do white blood cells perform in a human body? a. clotting blood b. conducting electrical impulses c. secreting enzymes d. carrying oxygen 

the answer on edg is secreting enzymes

c. secreting enzymes

Explanation:

White blood cell which is also known as leukocyte or white corpuscle, is a  component of the blood that helps defend the body against anti bodies that causes infection and disease.

It does so by the secretion of enzymes that eats up these antibodies, thus protecting the body from diseases that may have been caused by such anti or foreign bodies.

answer; /// the shaft of the hair consists of dead cells;