Answer:
Vigorous physical exercise
Explanation:
The question is incomplete and the options are not available anywhere therefore the most appropriate answer would be the physical exercise.
The cellular respiration is the process which oxidises the substances in the food especially the carbohydrates, proteins and fats. This oxidation form the energy molecule called ATP which is used during the various process.
The cellular respiration increase in the body when the body has to require a large amount of energy especially during the moderate to hard or vigorous physical work. Increased respiration provides ATP.
Thus, Vigorous physical exercise is correct.
