In pesticide handling, which term describes the medium used to carry the active ingredient to the target site?

• A. Carrier
• B. Check valve
• C. Cone-Spray nozzle
• D. Compressed-air sprayer

Answer: (A)

The medium that carries the active ingredient to the target site is the carrier. In pesticide formulations, the active ingredient is dissolved or suspended in this carrier, which is often water but can also be another diluent or oil. The carrier enables the product to be applied evenly and influences spray characteristics, compatibility, and how well the chemical covers or reaches the target. The other terms describe equipment features or types rather than the transport medium: a check valve prevents backflow, a cone-spray nozzle controls the spray pattern, and a compressed-air sprayer is a device that delivers the spray using air.