Three factors that make for effective pesticide use are

Three factors that make for effective pesticide use are

• A. Timing application to optimal weather conditions, pest susceptibility to the pesticide, and ability to protect natural enemies
• B. Cost, color of label, and brand
• C. Speed of application, noise level, and operator experience
• D. Crop yield, market price, and soil type

Answer: (A)

The key idea is using pesticides in a way that actually achieves control: apply at the right time under favorable conditions, choose products the pest is susceptible to, and protect natural enemies that help keep the pest population in check. Timing the application with appropriate weather conditions improves coverage and product performance, and pest susceptibility ensures the chosen pesticide will effectively affect the target pest. Preserving natural enemies—beneficial insects and predators—supports ongoing pest suppression and can reduce the need for repeated applications, lessen environmental impact, and help prevent resistance. Other options miss the core of effective use because they focus on cost, brand, appearance, speed, or market factors that don’t directly determine how well the pesticide works, or they emphasize crop yield or soil type that are not immediate drivers of pest control effectiveness.

The key idea is using pesticides in a way that actually achieves control: apply at the right time under favorable conditions, choose products the pest is susceptible to, and protect natural enemies that help keep the pest population in check. Timing the application with appropriate weather conditions improves coverage and product performance, and pest susceptibility ensures the chosen pesticide will effectively affect the target pest. Preserving natural enemies—beneficial insects and predators—supports ongoing pest suppression and can reduce the need for repeated applications, lessen environmental impact, and help prevent resistance.

Other options miss the core of effective use because they focus on cost, brand, appearance, speed, or market factors that don’t directly determine how well the pesticide works, or they emphasize crop yield or soil type that are not immediate drivers of pest control effectiveness.