Which of the following is an example of a dangerous good?

Selecting "All of the above" recognizes that all the given options—combustible liquids, flammable solids, and toxic substances—fall under the classification of dangerous goods. Dangerous goods are defined as substances that pose a risk to health, safety, property, or the environment due to their chemical or physical properties.

Combustible liquids can ignite and cause fires, due to their flash points being above 60°C. Flammable solids ignite easily and are capable of combustion through friction, shock, or other ignition sources. Toxic substances are harmful or fatal when inhaled, ingested, or absorbed through the skin, posing severe health risks.

Thus, acknowledging that all these types of materials are categorized as dangerous goods emphasizes the need for careful handling, transport, and storage to ensure safety and compliance with regulatory standards. Each category requires specific knowledge and precautionary measures, underscoring the importance of training in recognizing and managing dangerous goods.