Which term describes the lowest level of chemical toxicity?

The term that describes the lowest level of chemical toxicity is "Caution." In the context of labeling and safety information for chemicals, various terms are used to indicate the degree of toxicity associated with a substance. "Caution" signifies that the chemical poses a relatively low risk and its potential for causing harm is minimal compared to other substances. This term typically indicates that while there may be some level of risk, it is not considered severe, and users should still handle the chemical with attention to safety, but the measures required are less stringent than for more hazardous materials.

In contrast, terms like "Warning" or "Danger" indicate higher levels of toxicity and more severe risks associated with exposure, requiring more stringent safety precautions. "Extreme" isn't a standard classification within the context of chemical safety and thus is not a relevant descriptor for levels of toxicity. Understanding these classifications helps individuals prioritize safety measures when handling chemicals, ensuring that they take appropriate action based on the toxicity level.