Name the fossil fuel which is hard solid and black in colour :

Options

A. Coal
B. Petroleum
C. Natural gas
D. None of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Fossil Fuels**: Fossil fuels are natural substances formed from the remains of ancient plants and animals. They include coal, oil (petroleum), and natural gas.

2. **Identifying the Properties**: The question specifies that the fossil fuel is "hard," "solid," and "black in color."

3. **Evaluating Options**:
- Natural gas is in a gaseous state, so it cannot be the answer.
- Petrol (or gasoline) is a liquid, which also disqualifies it.
- Coal, on the other hand, is known to be a solid, hard substance and is typically black in color.

4. **Conclusion**: Based on the properties described, the fossil fuel that is hard, solid, and black in color is **coal**.

**Final Answer**: Coal

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