Answer:
The correct answer is E. all of the above
Explanation:
The cell cycle has several checkpoints that helps in the regulation of the cell cycle. Cell cycle regulation is important because if the cell cycle is not regulated then the cell will constantly divide which will be a waste of energy and an abnormal increase in the number of cells can do damage to the tissue. So regulation is important to maintain a proper cell number in the tissue.
Cell division helps in repairing the damaged tissue, therefore, cell division must be stopped after tissue is repaired and regulation is also important to prevent cancer because cell division stops when the mutation occurs in the cell's genetic material. Therefore the correct answer is E.