An increase in hemoglobin increases A) the ability of the blood to carry O₂ to various tissues. B) the quantity of plasma protein available for blood clotting. C) the leukocyte count. D) the body's immune response. E) the osmotic pressure of the blood.

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Quizplus · Accepted Answer

An increase in hemoglobin directly increases the blood's capacity to carry oxygen (O2) to various tissues, as hemoglobin is the protein in red blood cells responsible for oxygen transport.

An Increase in Hemoglobin Increases