Which material is typically most responsible for supporting fire ignition?

Oxygen is crucial for fire ignition because it is a key component in the chemical reaction known as combustion. For fire to occur, three elements are needed, commonly referred to as the fire triangle: heat, fuel, and oxygen. Without sufficient oxygen, combustion cannot happen, as it is the oxidizing agent that reacts with the fuel (combustible materials) to produce flame.

In environments with higher oxygen concentrations, fires can ignite more easily and burn more intensely. This is why oxygen is often seen as the material primarily responsible for supporting fire ignition. While other options may play roles in various aspects of fire behavior, oxygen is fundamentally essential for the initiation and sustaining of a fire.