Which statement is true about the fire tetrahedron?

The fire tetrahedron is a model that extends the concept of the fire triangle by adding a fourth component: the chemical reaction that occurs during combustion. The fire triangle consists of three elements necessary for fire: heat, fuel, and an oxidizing agent (usually oxygen). In contrast, the fire tetrahedron incorporates the nature of the combustion reaction itself, highlighting that for a fire to sustain, these elements must not only be present but also actively engage in a chemical transformation.

This comprehensive understanding of the combustion process is crucial for fire prevention and firefighting efforts, as it emphasizes the importance of addressing all four components of fire. By doing so, one can effectively interrupt the chain reaction and extinguish the fire. Thus, the fire tetrahedron provides a more complete picture of fire dynamics compared to the fire triangle.

The other options do not capture the essence of the fire tetrahedron accurately. For instance, it does not limit itself solely to chemical reactions, nor does it reduce the concepts found in the fire triangle. Additionally, the tetrahedron applies to various types of combustibles, not just solids.