Vo2max is related to which one of the following choices

The following are the options of this question.
A. The efficiency of the body to take in carbon dioxide and eliminate oxygen B. The efficiency of the body to take in oxygen and eliminate carbon dioxide C. The efficiency of the body to secrete perspiration and take in lactic acid
D. The ability of the body to endure exercise without oxygen
 
The answer is letter B. VO2 stands for “Volume of Oxygen” consumption. It describes the maximum amount of oxygen that a man, specifically an athlete can use. VO2 is usually tested through a motorized treadmill. This is commonly used to measure cardiorespiratory fitness to predict the athlete’s potential to engage in a certain sport.

Keep your breathing calm and try to ignore it