The correct answer is A. 2.
Mitosis is a type of cell division that results in two identical daughter cells. The process begins with a parent cell that has a nucleus with two copies of each chromosome. The chromosomes are duplicated, and then the nuclear envelope breaks down. The duplicated chromosomes are then separated into two groups, which are pulled to opposite ends of the cell by the mitotic spindle. The cell then pinches in the middle, and two daughter cells are formed, each with one copy of each chromosome.
Option B is incorrect because it states that four daughter cells are formed. This is not possible, as mitosis only results in two daughter cells.
Option C is incorrect because it states that six daughter cells are formed. This is not possible, as mitosis only results in two daughter cells.
Option D is incorrect because it states that eight daughter cells are formed. This is not possible, as mitosis only results in two daughter cells.