Piped Natural Gas (PNG) is used for A. Mining B. Welding C. Anaesthesia D. Cooking

The correct answer is D. Cooking.

Piped natural gas (PNG) is a form of natural gas that is transported through pipelines to end users. It is a clean-burning fuel that can be used for cooking, heating, and generating electricity.

Mining is the extraction of minerals from the earth. Natural gas is not used in mining.

Welding is a process of joining two or more pieces of metal together by melting them and then fusing them together. Natural gas is not used in welding.

Anaesthesia is a medical procedure that is used to reduce or eliminate pain during surgery or other medical procedures. Natural gas is not used in anaesthesia.