Concept:The blood component that transports oxygen contains the protein hemoglobin.
Explanation:Red blood cells, also called erythrocytes, contain hemoglobin.
Hemoglobin binds to oxygen in the lungs and carries it to body tissues.
White blood cells fight infection, not oxygen transport.
Platelets help with blood clotting.
Plasma is the liquid part that carries dissolved substances.
Therefore, the red blood cells are responsible for oxygen transport.
Answer:C. Red blood cells.