Which factor is crucial to consider when evaluating the safety of a pesticide?

When evaluating the safety of a pesticide, the signal word on the label is a crucial factor to consider. Signal words are part of the labeling requirements and are designed to communicate the level of toxicity of the pesticide to users. These words—such as "Danger," "Warning," and "Caution"—provide immediate information about the potential hazards associated with the product.

For instance, a product marked with "Danger" indicates that it is highly toxic and poses a greater risk to health compared to a product labeled "Caution," which is generally less hazardous. Understanding the signal word helps ensure that the user can take appropriate safety measures when handling or applying the pesticide, thereby minimizing the risk of harm to themselves, others, and the environment.

Factors such as the product’s market price, color, or brand popularity do not provide information about safety and toxicity. Therefore, relying solely on these aspects would not adequately assess the safety of the pesticide being evaluated.