Define the term "hazardous materials."

The definition of "hazardous materials" encompasses a broad range of substances that can potentially cause harm to health, safety, or the environment. This includes chemicals, biological agents, and other materials that can pose risks in various scenarios, such as exposure, spills, or improper handling. The term is used across various fields, including emergency response, environmental regulations, and occupational safety, to identify materials that require special handling, storage, and disposal protocols to mitigate the associated risks.

In contrast to the other options, which either focus on specific characteristics (like flammability), limited applications (such as construction materials), or products with specific histories (like recalled goods), the correct definition emphasizes the broader context of risk and safety. This comprehensive understanding is essential for anyone involved in the management, transportation, or regulation of hazardous materials, as it underscores the importance of recognizing potential dangers in various settings.