Which of the following is NOT a requirement for a fire to exist?

For a fire to exist, three essential components are required, often referred to as the fire triangle: heat, fuel, and an oxidizer. Heat is necessary to raise the material to its ignition temperature, fuel provides the material that burns, and an oxidizer, usually oxygen from the air, supports the combustion process.

Water, while commonly associated with extinguishing fires, is not a requirement for a fire to exist. In fact, water is used to remove heat from the fire, thus interrupting the fire triangle and leading to the suppression of flames. Therefore, the presence of water is irrelevant to the actual establishment of a fire; it is not a necessary component for combustion to occur.