Final answer:
The cell does not undergo division but doubles its mass in the G2 phase of mitosis. Hence the correct answer is option D
Step-by-step explanation:
In the G2 phase of mitosis, the cell does not undergo division but it doubles its mass. During this phase, the cell replenishes its energy stores, synthesizes proteins necessary for chromosome manipulation, and duplicates some cell organelles. It is a preparatory phase before entering the first stage of mitosis.
Hence the correct answer is option D