Answer:
A) Apoptosis, or the automatic death of a cell.
Explanation:
This is because the question asks what mechanism ensures/confirms the purpose of the mechanism where a cell prevents damaged cells from continuing to divide if it suffers DNA damage. In other words, how do we know the intent of the cell preventing damaged cells from continuing to divide is to prevent DNA damage? Well, it's apoptosis, which can be triggered if there is too much DNA damage.
