The question is asking for the term that is used to describe the phase in the life of the cell when cell division is taking place. The correct option is M phase [mitotic stage], that is, option A. In eukaryotic cells, the phases of the cell cycle are divided into two major phases, which are interphase and mitotic stage. During the mitotic stage, cell divides its DNA and cytoplasm into two equal parts, thereby forming two daughter cells.