Which set of elements correctly completes the Fire Triangle?

• A. Fuel, Oxygen, Heat.
• B. Water, Air, Pressure.
• C. Fuel, Oxygen, Pressure.
• D. Heat, Water, Foam.

Answer: (A)

Understanding the Fire Triangle means recognizing that combustion needs three things: fuel, oxygen, and heat. If any one of these is removed, the fire can’t continue. The set that includes fuel, oxygen, and heat provides all three elements, so it completes the triangle.

The other options mix in things that aren’t part of the triangle: water cools and removes heat but isn’t one of the three required elements; pressure and foam are not the core components of the triangle (foam is an extinguishing agent, and pressure is a factor in some systems but not one of the trio); without all three essential elements, the fire cannot sustain itself.