B. Ensures that a firearm will not fire accidentally
Answer:
The correct answer is option D. VO2 max. It is the amount at which the an athlete can take-up maximum oxygen during intense workout.
Explanation:
VO2 max also known as maximal oxygen uptake is a method to determine how much intake of oxygen is taken by an athlete during extreme workout.
The more the athlete works out the more energy will be produced in the cells, also known as ATP.
Sometimes VO2 max is confused by lactose threshold, where the lactate is build up in the muscles causing pain.
