Which of the following is the least safe (less polluting) method for cooking?a.LPG stovesb.Wood/dung burning stovesc.Natural gas stovesd.Electric cookers

When evaluating the safety and pollution levels associated with various cooking methods, it's essential to consider the emissions produced and their environmental impact. Here's a breakdown of the options:

1. LPG Stoves: Liquefied Petroleum Gas (LPG) stoves generally emit fewer pollutants compared to wood or dung burning stoves. They produce carbon dioxide and water vapor but can also release some pollutants if not burned efficiently.

2. Wood/Dung Burning Stoves: These stoves are considered among the least safe and most polluting options. Combustion of wood and dung releases a significant amount of particulate matter, carbon monoxide, and other harmful substances, contributing to air pollution and health issues.

3. Natural Gas Stoves: Similar to LPG, natural gas (which is primarily methane) produces fewer emissions than wood or dung when combusted. Although it is cleaner than solid fuels, it still emits carbon dioxide and can leak methane during usage.

4. Electric Cookers: The safety and pollution level of electric cookers depend on the source of the electricity used. If powered by renewable energy, they can be the cleanest option. However, if powered by fossil fuels, they can still contribute to pollution.

Conclusion:

Given this analysis, the least safe and most polluting method of cooking from the options provided is b. Wood/dung burning stoves. This method significantly contributes to indoor and outdoor air pollution, posing health risks to users and the environment.