How are "dangerous goods" defined in relation to hazardous materials?

"Dangerous goods" are defined as items or substances that pose a risk to health, safety, or property during transport. This definition encompasses a wide range of materials, including chemicals, explosives, radioactive materials, and even certain types of waste. The classification is important because it determines the regulations and safety measures that must be followed during the handling and transportation of these goods. By identifying these items, safety protocols are established to mitigate potential risks, ensuring the protection of the public, transport personnel, and the environment.

In contrast to this correct answer, the other options either inaccurately describe the scope of dangerous goods or mischaracterize what is deemed hazardous. For instance, items that are not regulated during transport do not fall under the classification of dangerous goods, as they do not pose any significant risk. Flammable liquids, while indeed dangerous, represent only a subset of dangerous goods; therefore, limiting the definition to only flammable liquids is too narrow. The last option regarding all items that can cause environmental damage also does not fully capture the health and safety risks that are a core part of the definition of dangerous goods. Therefore, focusing on the potential risk to health, safety, or property provides the most accurate and comprehensive view of what constitutes dangerous goods.