Which of the following materials would typically be involved in a Class B fire?

The choice of cooking oils and gasoline aligns with the characteristics of a Class B fire, which involves flammable liquids and gases. Class B fires can occur with substances like gasoline, oils, paints, and certain solvents, which can create explosive situations and spread quickly if not handled properly.

Class B fires require specific extinguishing agents that interrupt the chemical reaction of the fire, such as foam, dry chemical, or carbon dioxide extinguishers. The importance of recognizing this classification is crucial for selecting the right approach to extinguish the flames effectively and safely.

The other materials listed, such as wood and paper, are associated with Class A fires, while electrical wiring pertains to Class C fires, and metals like magnesium relate to Class D fires. Each class of fire has distinct properties that dictate the appropriate response and firefighting methods.