Which of the following would you except to have the lowest resting heart rate? A)a trained athlete B)an unconditioned adult C)a person with heart failure D)a teenager with a sedentary lifestyle E)an 80-year-old woman

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A trained athlete would have the lowest resting heart rate because their cardiovascular system has been conditioned to efficiently pump blood and transport oxygen throughout the body during exercise. As a result, their heart muscle becomes stronger, and they have a larger stroke volume, which means the heart can pump more blood with each beat and doesn't have to work as hard at rest.

Which of the Following Would You except to Have the lowest