Final answer:
During the G2 stage of cell division, the cell undergoes cell growth and protein synthesis, and ensures that DNA replication in the S phase is complete and repaired. The correct answer is Cell growth occurs (Option B).
Step-by-step explanation:
During the G2 stage of cell division, which is part of interphase, the cell undergoes important processes to prepare for mitosis. One key event during the G2 phase is the cell's continued growth and protein synthesis, which includes the production of tubulin proteins that are crucial for the upcoming mitotic spindle formation.
Moreover, in the G2 phase, the cell ensures that DNA replication has been completed during the S phase, and that any DNA damage is repaired. This stage also involves an increase in the synthesis of proteins like cohesin, which is important for holding sister chromatids together until the cell is ready for mitosis. This preparation is crucial for the successful segregation of duplicated chromosomes into daughter nuclei during mitosis.
However, options A, C, and D refer to events in mitosis itself, not in the G2 phase. Centrosomes beginning to move away from each other is an event indicating the onset of prophase in mitosis. The correct answer to the question - Which event occurs during the G2 stage of cell division? - is Cell growth occurs (Option B).