Which statement correctly defines a residue as something that dries out?

• A. Refers to pesticide after it has dried up.
• B. Is a pesticide that remains active/effective for an extended period.
• C. A pesticide remaining immediately after an application.
• D. The area to be evacuated.

Answer: (A)

Residue in pesticide terms means what is left behind after the product has been applied and dried. It’s the material that remains on surfaces or in the environment once moisture has evaporated and the application has settled, rather than the spray itself or how long the product stays active. So the statement describing the residue as the pesticide after it has dried up captures this idea. The other ideas describe ongoing activity, the immediate post-application deposit, or an evacuation area, none of which define what a residue is.