What function does the G2 phase of the cell cycle serve?

The G2 phase of the cell cycle is primarily focused on preparation for mitosis, making the choice that emphasizes this aspect accurate. During G2, the cell undergoes several critical processes to ensure that it is ready to divide. This includes checking for any DNA damage that might have occurred during replication, correcting errors, and ensuring that all necessary proteins and organelles are in place.

Additionally, the cell also synthesizes proteins required for cell division and begins to reorganize its internal structures in anticipation of mitosis. It's a phase where the cell essentially prepares itself for the final stages of division, ensuring that everything is in optimal condition for successful mitosis to take place. Hence, while the G2 phase does involve some error checking, the primary function is centered around preparation for the subsequent process of mitosis.