Answer:
3) Cell regeneration
Step-by-step explanation:
The answer is cell regeneration because mitosis is basically the process cell duplication. The answer can't be 1 or 4 because the cell duplication does not have any part in the death or development of a cell. Option 2 isn't it either because the process of mitosis doesn't actually replace anything. Instead, there is regeneration of new cells from the "old" cells.
This may be incorrect! Best of luck <3