Answer:
The correct answer will be option-Prophase
Step-by-step explanation:
The cell division takes place in two phases: the interphase marked with the preparation of the cell to divide and the M-phase which is marked with division of the cell and its content.
The chromosome replication takes place during S phase of the interphase which is then distributed into two cells in the M-phase or mitotic phase of the cell division.
The Mitotic phase begins with the prophase in which the loosely arranged chromatin material starts condensing attaining the structure of the chromosome and the degradation of the nucleolus.
Thus, prophase is the correct answer.