Answer:
C. chlorpyrifos
Step-by-step explanation:
Chlorpyrifos is an organophosphate that is commonly used in environments where humans and pets are regularly present. It is often used as an insecticide to control pests on crops, in gardens, and in homes. However, chlorpyrifos has been linked to negative health effects in humans, including respiratory problems and developmental delays in children, and its use has been restricted in some countries.