Which one of the following is an inexhaustible resource?

Options

A. Air
B. Coal
C. Mineral
D. Forest

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to identify which among the given options is an inexhaustible resource. Inexhaustible resources are those that cannot be depleted or exhausted by human activities.

2. **Analyzing the Options**:
- **Option A: Air**: Air is a natural resource that is essential for life. It is constantly replenished through natural processes (like photosynthesis) and cannot be exhausted.
- **Option B: Coal**: Coal is a fossil fuel that is formed from ancient organic matter. It is a finite resource and can be depleted through mining and consumption.
- **Option C: Mineral**: Minerals are natural resources that are mined from the earth. They are also finite and can be exhausted through extraction.
- **Option D: Forest**: Forests are ecosystems that can be depleted through deforestation and human activities.

3. **Identifying the Correct Answer**: Among the options, air is the only resource that is inexhaustible. Coal, minerals, and forests can all be depleted through human activities.

4. **Conclusion**: Therefore, the correct answer to the question is **air**.

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