Which of the following is NOT one of the four major categories of pest management?

The correct answer, which identifies the option that is not one of the four major categories of pest management, highlights the distinctions between recognized practices in the field. The four major categories are biological, chemical, cultural, and mechanical.

Biological pest management involves utilizing the natural enemies of pests, such as predators, parasites, or pathogens, to control pest populations. Chemical pest management refers to the use of pesticides to kill or suppress pests. Cultural methods encompass practices that alter the environment to make it less conducive to pest establishment, such as crop rotation, sanitation, or adjusting planting times.

The term "environmental" does not represent a separate category in conventional pest management strategies. While environmental considerations, such as sustainability and ecosystem health, are very important in pest management practices, they do not constitute a standalone category like the others listed. Hence, this makes it clear why "environmental" is not classified alongside the primary pest management categories.