Which of the following is explicitly listed as a type of hazardous material under the definition?

• A. Hazardous Substances
• B. Hazardous Wastes
• C. Hazardous Temperature Materials
• D. Hazardous Pollutants

Answer: (A)

Hazardous Substances are named directly in the definition as a type of hazardous material. This explicit listing means the regulation recognizes substances classified as hazardous substances as a distinct category that requires specific handling and compliance for transport. The other terms refer to related ideas in broader environmental or safety rules, but they are not the category that the definition itself lists. So the correct choice is the term that appears as a defined type within the hazardous material definition.