What type of hazardous materials includes materials that have properties to facilitate combustion or support combustion?

The correct answer identifies oxidizers and organic peroxides as materials that facilitate or support combustion. This distinction is crucial because oxidizers are substances that, while not necessarily combustible by themselves, can enhance the combustion of other materials by providing the oxygen needed for the fire to burn. Organic peroxides are a subclass of oxidizers that can be highly reactive, often leading to violent reactions when they come in contact with flammable substances.

In the context of hazardous materials, understanding the role of oxidizers and organic peroxides helps ensure safety during handling and storage. These materials require specific precautions, as their ability to support combustion can lead to fire hazards, especially in environments where flammable materials are present. This understanding is vital for emergency responders and hazardous materials teams when planning for potential incidents involving these substances.