True or False: The four routes of exposure are dermal, inhalation, oral, and the eyes; acute toxicity is determined by examining dermal, inhalation, and oral toxicity in test animals.

• A. True
• B. False
• C. Not sure
• D. It depends

Answer: (A)

Understanding exposure routes and how acute toxicity is assessed: People and animals can be exposed to pesticides through skin contact (dermal), breathing in vapors or aerosols (inhalation), swallowing (oral), or direct contact with the eyes (ocular exposure). When scientists determine acute toxicity, they primarily test the three systemic routes—dermal, inhalation, and oral—to see how lethal a substance can be after a short-term exposure. Eye exposure is important for evaluating local effects like irritation or corrosion, but it isn’t used to define systemic acute toxicity. So the statement is true: it lists the eyes as a route of exposure, and acute toxicity is determined from dermal, inhalation, and oral tests in animals.