Answer:
M (mitotic phase).
Explanation:
Cell cycle can be defined as a series of cyclic event, by which one parent cell divides into two daughter cells. It is divided into two phases: interphase and M (mitotic phase). During interphase, cell prepares for division by increasing its size and replicating genetic material.
M phase involves division of cell nucleus. By M phase, chromosomes present in nucleus are separated into two daughter nuclei that leads to the formation of genetically similar daughter cells.
Thus, the correct answer is 'mitotic phase.'
