Which of the following GHS categories signals a greater risk to health?

The category designated as GHS 1 represents a greater risk to health because it is assigned to substances or mixtures that are classified as posing the highest level of danger. In the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), categories are ranked from 1 to 5, with GHS 1 being the most severe. This means that materials in this category are likely to cause serious health hazards, such as acute toxicity, carcinogenicity, or reproductive toxicity. Understanding the implications of each GHS category is essential for ensuring proper handling, labeling, and protective measures to mitigate risks associated with hazardous substances. By clearly identifying materials with a GHS 1 classification, organizations can prioritize safety and health measures to protect workers and the environment effectively.