In the pesticide safety model, what factor multiplies with exposure to determine hazard?

• A. Toxicity
• B. Dose
• C. Frequency
• D. Duration

Answer: (A)

Hazard is the potential harm that could result from contact with a pesticide, and it scales with how toxic the chemical is. The toxicity of the substance acts as the multiplier with exposure—so for the same amount of exposure, a more toxic pesticide creates a higher hazard than a less toxic one. Dose, frequency, and duration describe aspects of exposure (how much enters the body, how often, and for how long) but they don’t by themselves serve as the multiplier that determines hazard; they shape the level of exposure that then interacts with the chemical’s inherent toxicity to set the hazard level.