Which method would be appropriate for treating a sensitive area like a zoo?

Biological control is highly suitable for sensitive areas like a zoo because it utilizes natural predators or pathogens to manage pest populations without the harmful effects often associated with chemical pesticides. This method is environmentally friendly and minimizes risks to both animals and humans, making it a safe choice for locations where various species coexist and require a careful balance of ecosystems.

In contrast, pesticide fogging can create airborne chemicals that might harm non-target organisms, including zoo animals, making it less desirable in such sensitive environments. Snap traps, while effective for certain pests, can be inhumane and may cause distress or harm to zoo residents. Poison bait presents similar risks, as it poses a significant threat to both animals and humans if ingested accidentally, creating potential safety hazards in a public space like a zoo. Therefore, biological control remains the most appropriate and responsible method in this context.