What information is emphasized by signal words on product labels?

Signal words on product labels play a crucial role in communicating important safety information to consumers. Specifically, these words are designed to indicate the level of hazard associated with the product. For instance, phrases like "Caution," "Warning," or "Danger" provide immediate insight into the potential risks posed by the product, helping consumers make informed decisions regarding its use.

This emphasis on hazard levels is essential for ensuring safety and compliance with regulatory standards, as it alerts users to handle the product with appropriate care, follow safety instructions, and take necessary precautions. The clarity and directness of signal words contribute significantly to the effectiveness of labeling in hazard communication, serving as a quick reference that enhances public safety awareness.

In contrast, the other options do not directly relate to the primary function of signal words on product labels. Customer feedback, product history, or marketing strategies, while important in their respective contexts, do not serve the critical purpose of communicating safety and hazard information in the way that signal words are specifically intended to do.