What impact do pests have on crop quality?

Pests can significantly reduce the quality of crops in various ways, which is why the selected answer is correct. When insects, diseases, or weeds infest crops, they can damage plant tissues, impair photosynthesis, and reduce overall plant vigor. This damage can lead to unsightly blemishes, compromised taste, and lower nutritional value. Additionally, the presence of pests can increase the likelihood of decay and spoilage during storage and transportation, further diminishing the quality of the produce by the time it reaches consumers.

In contrast, the other options suggest positive outcomes or neutrality. For example, the idea that pests improve crop resilience does not hold true, as pests often weaken plants rather than strengthen their defenses. Similarly, claiming pests enhance flavor contradicts common observations, as many pest-infested crops may have off-flavors or diminished taste quality. Finally, asserting that pests have no effect overlooks the well-documented adverse consequences they can have on both the aesthetic and nutritional aspects of crops.