Answer:
A. Metaphase
Step-by-step explanation:
Prophase is the first stage of mitosis, during which the chromosomes condense and the spindle fibers form. After prophase, the cell enters metaphase, during which the chromosomes line up along the equator of the cell.

The other answer choices are not correct because they are stages of mitosis that occur after metaphase.
- Anaphase is the stage during which the chromosomes separate and move to opposite poles of the cell.
- Telophase is the stage during which the chromosomes decondense and the nuclear envelope reforms.
- Go phase is a stage of the cell cycle in which the cell is not dividing.