Which is another term for liquefied petroleum gas?

Liquefied petroleum gas (LPG) primarily refers to a mixture of propane and butane. However, the term is most commonly synonymous with propane specifically because it is one of the main components of LPG and is the most widely used in the fuel industry for heating, cooking, and transportation. Propane's properties allow it to be easily liquefied under pressure, making it an efficient energy source that can be stored and transported in liquid form.

While butane is also a component of LPG, it is less commonly referred to as liquefied petroleum gas on its own. Methane is a different compound entirely and is the primary component of natural gas, which is not considered liquefied petroleum gas. Therefore, the most accurate choice that aligns with the term liquefied petroleum gas is propane.