Which one is an essential mineral, not constituent of any enzyme but stimulates the activity of many enzymes?

Options

A. Na
B. B
C. K
D. C

Answer

**Step-by-step Solution:**

1. **Understanding the Question**: The question asks for an essential mineral that is not a constituent of any enzyme but stimulates the activity of many enzymes.

2. **Identifying the Options**: The options given are:
- Sodium
- Boron
- Potassium
- Carbon

3. **Analyzing Each Option**:
- **Sodium**: While sodium is an essential mineral, it is primarily involved in maintaining fluid balance and nerve function rather than directly stimulating enzyme activity.
- **Boron**: Boron is important for plant growth and development but is not widely recognized as a mineral that stimulates enzyme activity.
- **Potassium**: Potassium is known to be an essential mineral that plays a crucial role in various physiological processes, including the stimulation of enzyme activity, without being a direct constituent of any enzyme.
- **Carbon**: Carbon is a fundamental element in organic molecules but is not classified as a mineral.

4. **Conclusion**: Based on the analysis, potassium is the mineral that fits the criteria of being essential, not a constituent of any enzyme, but stimulating the activity of many enzymes.

5. **Final Answer**: The correct answer is **Potassium**.

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