Which of the following is a common material that creates Class B fires?

Class B fires are characterized by the involvement of flammable liquids and gases. Gasoline is a common substance that falls under this category, making it a significant risk for combustion. When gasoline ignites, it can create a fire that is difficult to extinguish with water, as water can cause the flames to spread rather than suppress them.

In contrast, materials like wood, paper, and rubber are associated with Class A fires, which involve ordinary combustibles. Class A fires are typically extinguished with water, while Class B fires require different extinguishing agents, such as foam or dry chemical extinguishers, specifically designed to combat flammable liquid fires. Understanding the classification of fires is crucial for proper fire response and safety measures.