In my opinion, i think it's D but im not sure. Hope this helped, have an amazing day :)
The correct answer is letter C, Determining your VO2 Max is the best measure of cardiorespiratory fitness. VO2Max is the maximum volume of oxygen that a person can intake during bouts of exercise. There is actually a specific machine that measures the volume of oxygen intake a person can do during an activity. It is usually done in labs and in a controlled set-up.
It really depends on their age. You also cant just assume all patients are on birth control.
Oxygen in the air can cause sliced fruit to brown, a process called enzymic browning (an oxidation reaction). Phenols and the enzyme phenolase are found in the cells of the apple, and when these are exposed to oxygen in the air, for example through slicing, the oxygen causes a reaction.
