The signal word on a pesticide label indicates the product's acute toxicity level.

• A. Indicates environmental hazard
• B. Indicates storage temperature
• C. Indicates chronic toxicity
• D. Indicates acute toxicity

Answer: (D)

Signal words on pesticide labels communicate the level of acute toxicity—how dangerous the product can be from short-term exposure. They put the immediate hazard into quick categories so you know what precautions to take right away, such as what kind of PPE to wear or what handling steps are needed. A product labeled with a high-toxicity signal word indicates greater immediate danger, while lower toxicity uses milder words. This is why the statement that the signal word shows acute toxicity level is correct.

Other aspects aren’t conveyed by the signal word. Environmental hazard warnings appear separately on the label, not through the signal word. Storage temperature is provided in the product’s storage and handling instructions, not via the signal word. Chronic toxicity refers to long-term effects from prolonged exposure and is described in other sections of the label, not by the immediate signal word.