Application of a(n) ______ formulation of an insecticide is most likely to result in a bird kill.

• A. EC
• B. G
• C. WSP
• D. DF

Answer: (B)

Granular formulations stay on the soil or on treated surfaces after application. Ground-foraging birds regularly peck at small particles on the ground, seeds, or insect residues, so they are likely to ingest these granules and receive a toxic dose. The risk is tied to direct ingestion of a discrete, food‑like particle, which granules resemble to birds.

Other forms are liquids or powders that either require dilution or become airborne, or are dissolved in water, making the exposure route less about eating a discrete pellet and more about incidental ingestion or inhalation. While those routes can pose hazards, the most direct and likely route for a bird kill is ingestion of granular insecticide on the ground.