Which sequence correctly lists the pesticide label signal words from lowest to highest toxicity?

Which sequence correctly lists the pesticide label signal words from lowest to highest toxicity?

• A. Caution, Warning, Danger, Danger-Poison
• B. Danger-Poison, Danger, Warning, Caution
• C. Caution, Danger-Poison, Warning, Danger
• D. Warning, Caution, Danger, Danger-Poison

Answer: (A)

The main concept here is how pesticide label signal words reflect the level of acute toxicity. On labels, each word signals a hazard level: Caution means the lowest acute toxicity, Warning indicates a higher hazard, Danger shows even greater hazard, and Danger-Poison indicates the greatest hazard of the four. The sequence from lowest to highest toxicity is therefore Caution, Warning, Danger, Danger-Poison. This ordering matches how the label communicates risk so you can choose appropriate PPE and handling precautions. Other sequences would mix these levels in a way that would violate the established ladder of toxicity, which is why they aren’t correct.

The main concept here is how pesticide label signal words reflect the level of acute toxicity. On labels, each word signals a hazard level: Caution means the lowest acute toxicity, Warning indicates a higher hazard, Danger shows even greater hazard, and Danger-Poison indicates the greatest hazard of the four. The sequence from lowest to highest toxicity is therefore Caution, Warning, Danger, Danger-Poison. This ordering matches how the label communicates risk so you can choose appropriate PPE and handling precautions. Other sequences would mix these levels in a way that would violate the established ladder of toxicity, which is why they aren’t correct.