What are the two overall factors to consider when determining pesticide use?

The correct answer focuses on "efficacy and hazard" as the two overall factors to consider when determining pesticide use. Efficacy refers to how effective a pesticide is at controlling the target pest or diseases. It is essential to select a pesticide that not only controls the intended pest but does so in a reliable manner, ensuring that the product will perform as expected under the specific conditions of use.

Hazard, on the other hand, pertains to the potential risks associated with the use of a pesticide. This includes evaluating the toxicity of the chemical to humans, wildlife, and the environment. Understanding the hazards allows for informed decisions about the safety measures that need to be taken during application and the potential impacts on non-target organisms.

Together, efficacy and hazard provide a comprehensive framework for making responsible decisions regarding pesticide application, ensuring effectiveness while minimizing risks to health and the environment.

The other choices may include relevant factors but do not encompass the fundamental aspects required for a thorough assessment of pesticide use. For instance, while target pests and effects on humans are important considerations, they do not holistically cover both the effectiveness of the pesticide and the associated risks. Cost and availability, although practical, are more about feasibility rather than the safety and effectiveness of the pesticide itself. Weather conditions