Name one biological control method that can be used in pest management.

Introducing natural enemies, such as predators or parasites, of the pest is a key biological control method in pest management. This approach leverages the natural ecosystem to manage pest populations by utilizing organisms that naturally prey on or parasitize the pests in question. For example, ladybugs are known to control aphid populations, and certain parasitic wasps can help manage caterpillar pests.

Biological control is preferred in many situations because it can provide long-term pest management solutions while minimizing environmental impact. It encourages biodiversity and supports the balance of ecosystems, leading to more sustainable agricultural practices. Moreover, once established, these natural enemies can continue to help suppress pest populations without the need for continuous human intervention.

In contrast, the other choices listed do not reflect biological control. Using synthetic pesticides exclusively involves chemical methods that may have negative environmental impacts and contribute to resistance in pest populations. Utilizing chemical fertilizers is unrelated to pest control as it focuses on plant nutrition rather than pest management. Clearing the pest area entirely may be a drastic and often impractical method that could disrupt the ecosystem and lead to other issues without necessarily solving the pest problem long-term.