The nuclear membrane and nucleolus reappear during

Options

A. prophase
B. metaphase
C. anaphase
D. telophase

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks during which phase of the cell cycle the nuclear membrane and nucleolus reappear.

2. **Identifying the Phases of Cell Division**: The cell division process includes several phases: prophase, metaphase, anaphase, and telophase.

3. **Observing the Disappearance of Nuclear Structures**: During prophase, the nuclear membrane and nucleolus disappear as the cell prepares for division. This is necessary for the chromosomes to be properly segregated.

4. **Examining Each Phase**:
- **Prophase**: Nuclear membrane and nucleolus are absent.
- **Metaphase**: The nuclear membrane and nucleolus remain absent as chromosomes align at the metaphase plate.
- **Anaphase**: The chromosomes are pulled apart to opposite poles of the cell, and the nuclear structures are still not present.

5. **Identifying Telophase**: In telophase, which follows anaphase, the chromosomes have reached the opposite poles. Here, the nuclear membrane and nucleolus begin to reappear around each set of chromosomes.

6. **Conclusion**: Therefore, the nuclear membrane and nucleolus reappear during the telophase phase of cell division.

7. **Final Answer**: The answer is **telophase**.