What is the purpose of using written resources in identifying Hazmat?

Using written resources in identifying Hazmat primarily serves to communicate potential hazards or cautions associated with hazardous materials. These documents, which include Safety Data Sheets (SDS), labels, and regulatory guidelines, are essential as they provide critical information about the physical and chemical properties of the substance, its health and environmental risks, and recommended safety precautions.

When responders arrive at a scene, the written materials play a vital role in quickly determining the risks involved with the particular hazardous material present. Accessing this information enables responders to formulate an effective action plan, assess the level of personal protective equipment needed, and implement appropriate containment or mitigation strategies. This is why the focus is on communication of hazards—it's about ensuring safety for personnel and the environment when dealing with potentially dangerous materials.

While other options might contain elements that could be useful in specific contexts, their primary functions do not align as closely with the essential need to understand and communicate the hazards presented by hazardous materials.