Question

as a person ages, his or her levels of cardiorespiratory fitness tend to _______.
a. improve
b. decline
c. stay the same
d. none of the above

please select the best answer from the choices provided.

○ a
○ b
○ c
○ d

Explanation:

Cardiorespiratory fitness relates to the heart and lungs' ability to supply oxygen. With aging, physiological changes (like decreased lung capacity, heart function decline) typically lead to reduced cardiorespiratory fitness, so it tends to decline.

Answer:

B. decline