Which of the following are the main components of the fire triangle?

The correct answer identifies the main components of the fire triangle as fuel, heat, and oxygen. This triangle is critical in understanding fire behavior and fire prevention because these three elements are necessary for a fire to ignite and sustain itself.

Fuel refers to any combustible material that can ignite, which can include solids, liquids, and gases. Heat is the energy source that raises the material to its ignition temperature. Oxygen is the oxidizing agent that supports combustion; it is typically provided by the air surrounding the fire, which contains approximately 21% oxygen.

When any one of these components is removed or restricted, a fire cannot sustain itself, leading to its extinguishment. Understanding these components helps firefighters develop effective strategies for both fighting fires and preventing them from occurring in the first place.