Which of the following methods is considered a preventive control measure in pest management?

Crop rotation is recognized as a preventive control measure in pest management because it disrupts the life cycles of pests and diseases that thrive on specific host crops. By alternating the types of crops grown in a particular area from season to season, you can reduce the likelihood of pest infestations and the buildup of soil-borne pathogens. This method helps maintain the ecological balance and soil health, making it less favorable for pests to establish themselves.

In contrast, the other methods listed, such as using traps, spraying pesticides, and using baits, are typically reactive measures aimed at managing existing pest problems rather than preventing them from occurring in the first place. Using traps can capture pests that are already present, while spraying pesticides and using baits target existing infestations and populations. Therefore, crop rotation stands out as a proactive approach to pest management by focusing on prevention rather than reaction.