A residue may also be described as which of the following?

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

Answer: (B)

The main concept is residual activity—the lasting effectiveness of a pesticide after application. A residue is essentially the pesticide continuing to work for an extended period, providing ongoing pest control beyond the initial spray. That’s why describing it as a pesticide that remains active or effective for a longer time fits best. The other options misplace the idea: one points to something dried up, another to an area to evacuate, and another to the presence immediately after application, none of which capture the lasting control implied by residue.