Cells which are not dividing are likely to be at

Options

A. `G_(1)` phase
B. `G_(2)` stage
C. `G_(0)`
D. S phase.

Explanation

To answer the question "Cells which are not dividing are likely to be at," we need to analyze the cell cycle and identify the phase where cells are not actively undergoing division.

### Step-by-Step Solution:

1. **Understand the Cell Cycle**: The cell cycle consists of several phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). Each of these phases plays a crucial role in cell growth and division.

2. **Identify the Non-Dividing Phase**: Cells that are not dividing are typically in a stage where they have exited the active cycle of division. This stage is not part of the traditional cell cycle phases (G1, S, G2, M).

3. **Recognize the G0 Phase**: The phase where cells are metabolically active but not dividing is known as the G0 phase (or quiescent phase). In this phase, cells have exited the cell cycle and are in a resting state.

4. **Conclusion**: Therefore, the correct answer to the question is that cells which are not dividing are likely to be in the G0 phase.

5. **Review the Options**: If provided with options, we can eliminate G1, G2, and S phases as they are all phases of active cell cycle progression. The G0 phase is the only correct answer.

### Final Answer:
Cells which are not dividing are likely to be at the **G0 phase**.

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