Answer :
Answer:
A. the resting heart rate
Explanation:
A is the best answer choice in this situation because an athletic trainer should know the resting heart rate in order to know if ones heart rate is high or low.
Answer:
A. the resting heart rate
Explanation:
A is the best answer choice in this situation because an athletic trainer should know the resting heart rate in order to know if ones heart rate is high or low.