Explanation:

- Conventional Energy:

- Refers to energy sources that have been traditionally used and are typically non-renewable.

- Includes fossil fuels such as coal, natural gas, and petroleum.

- Options:

1. Biogas:

- Produced from organic waste through anaerobic digestion.

- Considered a renewable energy source.

2. Wind Energy:

- Harvested from wind turbines.

- Considered a renewable energy source.

3. Petroleum:

- A fossil fuel used widely in transportation and industry.

- Classified as a conventional energy source.

- Correct Answer

4. Solar Energy:

- Generated from sunlight using solar panels.

- Considered a renewable energy source.