Fossil fuels are at the verge of getting exhausted. It is because of their non-replenishment, increasing demand, increasing population and more energy dependent technologies. Therefore, one has to look up to the sources which can be regenerated and cause the minimum possible environmental damage.
''I'' am a fossil fuel that is very important for daily use. I am non-renewable source and regarded as the cleanest source of energy. I am found deep inside the earth in the gasous state. Who am “I"?

Options

A. Petroleum
B. Gasoline
C. Geothermal
D. Natural Gas

Answer

To solve the question, we need to identify the fossil fuel described in the passage. Let's break down the clues step by step:

### Step 1: Identify the characteristics of the fossil fuel
The passage states that the fossil fuel is:
- Very important for daily use
- A non-renewable source
- Regarded as the cleanest source of energy
- Found deep inside the earth in a gaseous state

### Step 2: Analyze the options provided
The options given are:
1. Petroleum
2. Gasoline
3. Geothermal
4. Natural Gas

### Step 3: Eliminate options based on the characteristics
- **Petroleum**: While it is a fossil fuel, it is not in a gaseous state; it is a liquid.
- **Gasoline**: This is derived from petroleum and is also a liquid, not a gas. Therefore, it does not fit the description.
- **Geothermal**: This is not a fossil fuel; it is a renewable energy source derived from the heat of the Earth.
- **Natural Gas**: This is a fossil fuel that is found in a gaseous state and is considered one of the cleanest fossil fuels.

### Step 4: Conclusion
Based on the analysis, the only option that fits all the characteristics described in the question is **Natural Gas**.

### Final Answer:
**Natural Gas**

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