___________ represents the most active stage of the cell cycle.

Options

A. Metaphase
B. Anaphase
C. Telophase
D. Interphase

Answer

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle**: The cell cycle consists of several stages that a cell goes through to divide and replicate. The main phases include Interphase and the Mitotic phase (which includes Prophase, Metaphase, Anaphase, and Telophase).

2. **Identifying Interphase**: Interphase is the longest phase of the cell cycle and is divided into three sub-phases: G1 (Gap 1), S (Synthesis), and G2 (Gap 2). During this time, the cell grows, duplicates its DNA, and prepares for division.

3. **G1 Phase**: In the G1 phase, the cell increases in size, produces RNA, and synthesizes proteins necessary for DNA replication. This phase is crucial for the cell's preparation for the next stage.

4. **S Phase**: The S phase is where DNA replication occurs. Each chromosome is duplicated, resulting in two sister chromatids for each chromosome.

5. **G2 Phase**: In the G2 phase, the cell continues to grow and produces proteins necessary for mitosis. The cell checks for any DNA damage and ensures that all the DNA is replicated correctly.

6. **Mitotic Phase**: After Interphase, the cell enters the Mitotic phase, where actual cell division occurs. This phase is shorter compared to Interphase.

7. **Conclusion**: Given that Interphase is the stage where the cell spends the majority of its time and is involved in critical processes for growth and DNA replication, it represents the most active stage of the cell cycle.

**Final Answer**: Interphase represents the most active stage of the cell cycle.

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