Which of the following is not a natural resource?

Options

A. soil
B. water
C. electricity
D. natural gas

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks which of the given options is not a natural resource. Natural resources are substances that occur naturally in the environment and are used by humans.

2. **Evaluate Each Option**:
- **Option A: Soil**: Soil is formed through natural processes like weathering of rocks and is essential for plant growth. Therefore, soil is a natural resource.
- **Option B: Water**: Water occurs naturally in various forms (freshwater, saltwater) and is vital for all forms of life. Thus, water is also a natural resource.
- **Option C: Electricity**: Electricity is generated using various natural resources (like coal, water, wind) but is not found in nature in its usable form. It is produced through human intervention, making it an artificial resource.
- **Option D: Natural Gas**: Natural gas is a fossil fuel that occurs naturally in the earth and is used for heating and energy. Hence, it is a natural resource.

3. **Identify the Correct Answer**: Among the options evaluated, electricity is the only one that is not a natural resource. It is a man-made resource created using natural resources.

4. **Conclusion**: The correct answer to the question is **electricity**.

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