What does the EPA signal word "Caution" represent?

• A. Low level of toxicity
• B. Moderate level of toxicity
• C. High toxicity
• D. Dangerous substances

Answer: (A)

The signal word "Caution" is used by the Environmental Protection Agency (EPA) to indicate a low level of toxicity. This labeling is part of a hazard communication system, which categorizes various materials to inform users of the potential risks involved in handling these substances.

In this context, "Caution" suggests that while there may be a risk associated with the substance, it is considered to be at a lower level compared to other categories, such as "Warning" or "Danger," which denote moderate and high levels of toxicity, respectively. Understanding these signal words is crucial for safe handling and storage practices, as they provide immediate insight into the risks of a substance and inform users how to manage it safely. Moreover, the other options describe higher levels of toxicity or more severe conditions, which do not align with the meaning of "Caution."