Answer:
A) Increase the number of mitochondria.
Step-by-step explanation:
Interestingly, if we look at a muscle cell we would see that they have an increased number of mitochondria. This happens because it is in mitochondria that happens a process called cellular respiration, which provides energy for the proper functioning of the cell, and muscle cells spend a lot of ATP to perform muscle contraction. So, the right answer is Letter A.