Which of the following best describes cardiovascular fitness?
a.
the ability of the body to do prolonged work
b.
the ability of the body to transport oxygenated blood efficiently
c.
the ability of the body to quickly shed fat
d.
the ability of the body to convert sugar into energy

Cardiovascular fitness is best described by the ability of the body to transport oxygenated blood efficiently.

Further Explanation:

The persons' daily life routine is organized with the help of physical activity. The physical activity is differentiated into different levels which help a person to achieve a healthy lifestyle.

Children should spend at least 60 minutes on physical activity on a daily basis whereas adults should spend at least 30 minutes on physical activity to have a good and healthy lifestyle. It increases the capability of a body to perform the daily activity.

Physical activity depends on:

The cardiovascular fitness is an ability of the cardiovascular system (lungs, vessels and heart) to proficiently provide oxygenated blood to functioning muscles and the muscle which use oxygen. Aerobic exercise is an important part of any fitness program. Aerobic exercise programs increase the consumption of oxygen and heart rate. Physical fitness helps us to prevent heart disease, lungs cancer, stroke, and type II diabetes.

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Answer Details:

Grade: High School

Subject: Health

Chapter: Physical Fitness

Keywords:

Safe, heart, cardiorespiratory exercise, oxygen, intensity, muscular strength, aerobic exercise, fitness, heart rate, muscles.

A) the ability of the body to do prolonged work

Explanation: Cardiovascular fitness is the capacity of heart and lungs to provide oxygen to the body organs and muscles to generate energy  while they are in physical sports activities or in exercising motion for prolong period of time.

Oxygen is supplied to the muscles with the help of oxygen-rich blood Organs and muscles utilize this oxygen for energy creation for exercises .Activities like sports, aerobic exercises etc are done for maintaining cardiovascular fitness.

Other options are incorrect because conversion into energy and elimination of fat is not the goal of cardiovascular fitness. Blood containing rich oxygen is supplied in body for long period of activities.

Thus, the most appropriate answer is option (A).