Vo2max is related to which one of the following choices?
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

VO2  Max stands for maximal oxygen uptake. It specifically refers to the efficiency of the body to take in oxygen and eliminate carbon dioxide. VO2 max is a measure used to indicate how an individual’s body is capable of utilizing oxygen within a minute. It is used in laboratories to measure an individual’s capacity for aerobic work. VO2 Max is a commonly accepted measurement of cardiorespiratory fitness and is used to predict the potential of specific athletes engaged in a particular sport.  

This is usually tested using a treadmill where an individual is asked to run while attached to a breathing apparatus calculating the amount of air being taken in and out of the body. 

Resistance than a bicycle? i'm not entirely sure