Which is one of the three basic components required for fire?

One of the three basic components required for fire is oxygen. In the fire triangle, which consists of fuel, heat, and oxygen, each element plays a crucial role in the combustion process. Oxygen is essential because it is the oxidizing agent that reacts with the fuel in the presence of heat to produce fire. Without oxygen, a fire cannot sustain itself, as the chemical reaction responsible for combustion cannot occur.

Fuel provides the material that burns, while heat acts as the energy source needed to initiate and maintain the fire. The absence of any one of these three components will extinguish a fire. Therefore, oxygen is a fundamental element in the process of combustion, making it a correct choice in identifying a component necessary for fire.