How do pests typically affect agricultural productivity?

Pests significantly impact agricultural productivity primarily by competing for essential resources such as nutrients, water, and sunlight that crops need to thrive. When pests infest crops, they draw on these resources, which can lead to reduced crop growth and yield. This competition can weaken the plants, making them more susceptible to diseases and environmental stressors, ultimately leading to lower overall productivity and economic loss for farmers.

While pests may sometimes have complex relationships with agriculture, such as facilitating certain ecological balances or interacting with other organisms, their primary role in the context of crop health and productivity is generally one of competition. The options that suggest pests enhance crop quality, increase nutritional content, or improve pest resistance do not align with the predominant negative impact that pests have on agricultural output.