What is the most important element in building cardiorespiratory endurance?

Aerobic capacity, or VO2 is the most important element in building cardiorespiratory endurance.

answer; /// the correct answer to the above question is a hospital is responsible for all area (250 feet) around the main building and around areas where inpatient services are provided

answer; (b) i believe the correct answer is : /eliminate health disparities and improve the health of all population groups;