Answer:
A. 18.5 to 24.9
Step-by-step explanation:
The ability of the circulatory system and respiratory systems to transport sufficient oxygen to the body muscles during an aerobic activity is called cardiorespiratory fitness.
According to the national institute of health, a person who has a BMI of less than 18.5 is underweight. A person with a BMI between 18.5 to 24.9 is normal or ideal and a person having more than 29.9 BMI is overweight.
So BMI between 18.5 to 24.9 is required to have optimal cardiorespiratory fitness because weight directly affects the cardiorespiratory fitness.