When a person is exercising, the body needs to deliver increased amounts of oxygen to the muscles. which component of blood ensures that the muscles will receive it?
a. thrombocytes.
b. leukocytes.
c. erythrocytes.
d. plasma

Erythrocytes are the component of blood ensures that the muscles will receive the oxygen during exercising. The term erythrocytes denotes the red blood cells (RBCs). The main function of the erythrocytes  is to carry oxygen from the lungs or gills to all the body tissues and to carry carbon dioxide, a waste product of metabolism, to the lungs, where it is excreted. Correct C

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