How can careful landscaping practices help manage pest infestations?

Careful landscaping practices play a significant role in managing pest infestations by utilizing thoughtful plant selection and strategic placement. By choosing plants that are resilient to pests or selecting those that attract beneficial organisms, such as predators or parasitoids, you enhance the ecosystem's natural defenses against harmful pests.

When specific plants are positioned in a way that disrupts the habitats or movements of pests, it further minimizes their chances of establishing themselves. Additionally, a diverse plant selection can create a balanced environment, making it less conducive for pest proliferation. This technique promotes an ecological approach to pest management, fostering biodiversity and reducing the reliance on chemical interventions.

In contrast, the other options do not effectively address the holistic nature of pest management. Solely relying on chemical pesticides may lead to resistance and negatively impact non-target organisms. While barriers can help with larger pests, they do not provide a comprehensive solution to various pest problems. Eliminating all vegetation is generally counterproductive, as it can create an inviting environment for pests due to the lack of natural predators and increased exposure of soil and plants.

Overall, option C embodies a sustainable approach to pest management through ecological landscaping practices.