Answer:
The correct option is A) Cellular respiration rates would increase in the individual's cells.
Step-by-step explanation:
As the muscle cells carry out the exercise, they need more oxygen to respire. This process will give them energy in the form of ATP to carry out the workout. As the process of cellular respiration occurs in the mitochondria, hence an increase in mitochondria of a cell results in increased amount or respiration.
Mitochondria are known as the powerhouse of a cell because they can produce ATP by the process of respiration. Hence, option A is correct.