…… supply oxygen to the blood.

A) Leukocytes

B) Erythrocyte

C) Lymphocytes

D) None of these

The erythrocyte, commonly known as a red blood cell (or RBC). The primary function of erythrocytes is to pick up oxygen from the lungs and transport it to the body’s tissues, and to pick up carbon dioxide at the tissues and transport it to the lungs.