What component in blood is responsible for transporting oxygen?

Hemoglobin is the correct answer because it is a specialized protein found in red blood cells that binds with oxygen molecules in the lungs and carries them throughout the body. When red blood cells circulate, hemoglobin facilitates the transport of oxygen to various tissues and organs where it is needed for cellular respiration and energy production. Hemoglobin's ability to pick up oxygen in the lungs and release it in other parts of the body is crucial for maintaining the oxygen levels needed for survival.

While platelets play a significant role in blood clotting and preventing bleeding, and white blood cells are essential for immune defense against infections, they do not have a function in oxygen transport. Plasma, the liquid component of blood, carries nutrients, waste, hormones, and proteins, but it does not carry oxygen directly. Therefore, hemoglobin is the key component responsible for achieving the essential task of transporting oxygen in the bloodstream.