What must be included in the information provided on hazardous material labels?

The correct choice is the inclusion of the substance's name and hazards on hazardous material labels. This information is vital for ensuring the safety of individuals who may come into contact with the material. The substance's name clearly identifies what the hazardous material is, while the associated hazards inform users of the potential dangers it poses, such as toxicity, flammability, or corrosiveness.

Having this critical information readily available allows for proper handling and emergency responses should an incident occur, promoting a safer work environment and adherence to safety regulations. It facilitates informed decision-making and risk assessment related to the use, storage, and disposal of hazardous materials.

While the historical background of a substance might be interesting and informative, it does not directly contribute to immediate safety concerns. Similarly, the color of the substance or the names of employees handling it do not provide the essential information needed for hazard recognition and risk management. Thus, the focus should be on the substance name and its associated hazards for effective safety communication.