As per observation the correct answer is d. all of the above are measured by maximum oxygen intake.
Oxygen s an elemnt that has the nascent oxygen also. In humans o2 intkae is usually 70 percent.
All the processes are well defined as o2 transportation or and muscles to absorb oxygen all are the well decribed by the carbon carrying capacity.
Thus well explained,
To learn more about the oxygen intake refer link :
https://brainly.com/question/22673336
