Answer :
Final answer:
Sealing building cracks and small openings is a c) mechanical control method in pest management, which involves physical tactics to prevent pest access or remove existing pests, without employing chemical means.
Explanation:
Sealing building cracks and small openings is an example of a mechanical control method in pest management. This hands-on technique is about physically preventing access to pests or removing them if they are already present. Sealing openings effectively excludes pests from entering a space, much like using nets or fences to protect plants in a garden.
It's a direct and non-chemical approach to pest management that can be highly effective, especially if pest populations have not already reached high levels. Mechanical control is very different from cultural control, which modifies the environment to be less habitable for pests, biological control, which involves using natural enemies to control pest populations, and chemical control, which uses pesticides.
