Question 21Safety & Environmental - 1st Asst/Chief

The correct answer is D) electricity. The fire triangle consists of three essential elements required for a fire to start and be sustained: fuel, oxygen, and heat. Electricity is not one of the three components that make up the fire triangle. While electricity can be a source of ignition and provide the necessary heat for a fire to start, it is not considered a fundamental element of the fire triangle. The other answer choices (A, B, and C) are all part of the fire triangle. Fuel provides the material that burns, oxygen supports the combustion process, and heat is the source of ignition that starts the fire. Electricity, on the other hand, is not a core component of the fire triangle.