Question

when an infection occurs, the number of a. red blood cells increase b. red blood cells decrease c. white blood cells increase d. white blood cells decrease e. white and red blood cells increase

Answer 1

White blood cells increase as they are the cells that destroy pathogens 

Answer 2

c. white blood cells increase

Step-by-step explanation:

White blood cells (WBC) are involved in immune responses of the body against any type of infection. These cells fight the infection by killing the pathogens, stimulating inflammatory responses and /or by the formation of antibodies to kill the antigens. Hence, when an infection occurs, the WBC count of blood increases. Since red blood cells are involved in oxygen and nutrient supply, they have no role in immune responses.