Which of the following describes one function of AFFF?

Aqueous film forming foam (AFFF) is specifically designed to create a foam blanket on the surface of flammable liquids. This foam blanket serves as a critical barrier that suppresses the release of flammable vapors, thereby reducing the risk of ignition. Additionally, it has the capability to cool the surface of the burning material and help prevent re-ignition after the fire is extinguished. The unique composition of AFFF allows it to spread quickly across the surface of a liquid, forming a protective film that aids in fire suppression.

The other options, while related to general fire safety and spill management, do not accurately describe the primary function of AFFF in fire-fighting scenarios. For instance, enhancing water pressure or absorbing fuel spills is outside the intended use of AFFF, while creating a vapor barrier is a secondary effect of its function but not a direct description of what AFFF does.