What change would increase the rate of oxygen diffusing from lung alveoli into the blood?
A. An increase in the humidity of air in the lungs
B. An increase in the partial pressure of oxygen in the blood entering the lungs
C. A decrease in the pH of the blood entering the lungs
D. An increase in the hemoglobin concentration of the red blood cells
E. A decrease in the partial pressure of oxygen in the alveoli
Answer: D
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