Respuesta :
Answer:
D. increase the rate of cellular respiration in mitochondria
These changes most directly help the person to increase the rate of cellular respiration in mitochondria.
What is cellular respiration?
Cellular respiration is a series of metabolic processes that take place within a cell of an organism.
During a running race, a person's breathing rate and heart rate increase. These changes most directly help the person to increase the rate of cellular respiration in mitochondria.
Thus, the correct option is D " increase the rate of cellular respiration in mitochondria."
Learn more about cellular respiration here: https://brainly.com/question/25921566
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