Which of the following is a common type of foam used for fire suppression?

Aqueous Film-Forming Foam (AFFF) is commonly used for fire suppression due to its effectiveness in combating flammable liquid fires. AFFF creates a film that flows over the surface of the burning liquid, effectively smothering the fire by cutting off its oxygen supply and cooling the fuel. This film-forming capability allows it to suppress fires more efficiently and is particularly valuable for handling hydrocarbon-based fuels, such as gasoline and oil.

The unique properties of AFFF make it suitable for use in environments where flammable liquids are present, such as airports, refineries, and chemical plants. Additionally, AFFF is designed to be mixed with water, which enhances its effectiveness when applied. Its widespread acceptance and versatility in firefighting operations further reinforce its status as a preferred option for fire suppression in various settings.