Biology

The correct answer is: C.Chromosome duplication

Chromosome duplication (or DNA replication) occurs during the S phase, not the G2 phase. By the time the cell enters the G2 phase, the chromosomes have already been duplicated, and the cell is preparing for mitosis.

Explanation of other options:

A.Protein synthesis for cell division: During the G2 phase, the cell synthesizes proteins required for mitosis, including those needed for the formation of the spindle apparatus and other components of cell division.