What is the definition of a signal word in pesticide safety?

• A. A word that defines the hazard level (Danger, Warning, Caution)
• B. The pesticide's brand name
• C. The definition of a signal word is a word that communicates hazard level
• D. The recommended crop label

Answer: (C)

Signal words on pesticide labels convey how hazardous a product is and what precautions are needed. They are chosen to communicate hazard severity directly to the user, guiding what protective actions to take. A signal word is defined as a word that communicates hazard level, such as Danger, Warning, and Caution, arranged from most to least hazardous. This makes the option that describes a signal word as a word that communicates hazard level the most precise. Brand names or crop recommendations don’t convey hazard severity, so they aren’t what a signal word represents.