Why do we use paper or kerosene oil to start fire in wood or coal?

Options

A. To reach the ignition temperature of wood or coal by burning of paper or kerosene.
B. To supply more oxygen through kerosene.
C. To give blue flame to the wood or coal.
D. For spreading the fire.

Explanation

### Step-by-Step Solution

1. **Understanding Ignition Temperature**:
- The ignition temperature is the minimum temperature at which a substance begins to burn. Different materials have different ignition temperatures.

2. **Properties of Paper and Kerosene**:
- Paper and kerosene oil have lower ignition temperatures compared to wood and coal. This means they ignite more easily.

3. **Energy Production**:
- When paper or kerosene burns, it produces a large amount of energy in the form of heat. This heat is essential for raising the temperature of wood or coal to its ignition temperature.

4. **Starting the Fire**:
- By burning paper or kerosene, the heat generated helps to reach the ignition temperature of wood or coal. Once the wood or coal reaches this temperature, it will ignite and continue to burn.

5. **Conclusion**:
- Therefore, we use paper or kerosene oil to start a fire in wood or coal because they help to reach the ignition temperature of these materials through the heat produced during their combustion.