Which of the following describes a primary function of a gas well?

The primary function of a gas well is to extract gas from the earth, specifically natural gas. Gas wells are drilled into geological formations that contain gas reserves, allowing for the efficient capture and transportation of gas to be used as energy. This extraction process is vital for supplying fuel for heating, electricity generation, and as an industrial feedstock.

While options mentioning extracting minerals or facilitating coal removal relate to other forms of energy production and resource extraction, they do not specifically describe the function of a gas well. The function of providing power for mining operations often involves electricity generated from various sources, but it is not the primary function of a gas well itself. Thus, the focus of a gas well is solely on gas extraction.