Which of the following is NOT part of the fire tetrahedron?

• A. Heat
• B. Light
• C. Fuel
• D. Oxygen

Answer: (B)

Verified step by step guidance

1. Understand that the fire tetrahedron is a model that explains the four essential components needed for a fire to occur and sustain itself.
2. Recall the four components of the fire tetrahedron: Heat, Fuel, Oxygen, and the Chemical Chain Reaction.
3. Recognize that 'Light' is not one of these components; it is actually a product of the fire, not a requirement for it.
4. Compare the given options (Heat, Light, Fuel, Oxygen) to the components of the fire tetrahedron to identify which one does not belong.
5. Conclude that 'Light' is NOT part of the fire tetrahedron because it is an effect of fire, not a cause or necessary element.