What is the major function of RBCs?

a. Cool the body
b. Fight infection
c. Enable blood to clot
d. Transport oxygen

d
FEEDBACK: a. Incorrect. The integumentary system controls the body temperature.
b. Incorrect. The white blood cells fight infection.
c. Incorrect. Platelets aid in the formation of clots.
d. Correct. The main function of RBCs is to transport oxygen.