Which statement about biological control methods is true?

• A. Highest Label Rate
• B. Modifying the Environment to Enhance Natural Enemies
• C. Importation of Exotic Pests to Control Natural Enemies
• D. Establishing New Natural Enemy Population Is Easy

Answer: (B)

Modifying the environment to enhance natural enemies is a foundational approach in biological control. By shaping habitats—adding flowering plants that provide nectar and pollen, maintaining hedgerows or refuges, and reducing broad-spectrum insecticides—you support predators and parasitoids so they keep pest populations in check. This conservation-based strategy leverages natural ecological relationships and tends to be more sustainable and cost-effective over time than relying on chemicals alone.

The other options don’t fit because using the highest label rate is a chemical-control tactic, not a biological one; introducing exotic pests to control natural enemies would create new problems and isn’t a standard, safe biological-control method; and claiming that establishing a new natural enemy population is easy ignores the ecological and regulatory challenges involved.