The correct option is A. Establishing protected areas and wildlife reserves. Detailed Explanation

1. Understanding Conservation: Conservation of endangered species involves protecting species from extinction and ensuring their survival in their natural habitats. This is crucial because many species face threats from habitat loss, poaching, climate change, and human encroachment.
2. Protected Areas and Wildlife Reserves:
3. Definition: Protected areas are regions designated for the conservation of wildlife and natural resources. Wildlife reserves are specific types of protected areas that focus on the preservation of animal species and their habitats.
4. Effectiveness: Establishing these areas helps to create safe havens where endangered species can live without the pressures of human activities such as urban development, hunting, and resource extraction. These areas often have regulations that limit human interference, allowing ecosystems to function naturally and species to thrive.
5. Benefits of Protected Areas:
6. Habitat Preservation: They protect critical habitats that are essential for the survival of various species. For example, forests, wetlands, and grasslands can be preserved, which are vital for many organisms.
7. Biodiversity Maintenance: Protected areas help maintain biodiversity by providing a space for various species to coexist, which is essential for ecosystem stability.
8. Research and Education: These areas can serve as sites for scientific research and education, helping to raise awareness about conservation issues and the importance of biodiversity.

Why the Other Options Are Incorrect B. Increasing urban development around wildlife habitats: - Explanation: Urban development typically leads to habitat destruction, fragmentation, and pollution. It encroaches on the natural habitats of endangered species, making it harder for them to find food, mates, and shelter. This option is counterproductive to conservation efforts. C. Promoting hunting and fishing in natural ecosystems: - Explanation: While regulated hunting and fishing can sometimes be part of sustainable management practices, promoting it broadly in ecosystems where endangered species exist can lead to overexploitation. Many endangered species are already at risk, and hunting or fishing can further decrease their populations. This option does not prioritize the conservation of endangered species. D. Allowing unrestricted access to all natural resources: - Explanation: Unrestricted access to natural resources often leads to overexploitation, habitat destruction, and pollution. This approach can severely threaten the survival of endangered species by degrading their habitats and reducing their food sources. Conservation requires careful management and restrictions to protect vulnerable species. Summary of Key Points

• Protected Areas: Establishing protected areas is the most effective method for conserving endangered species in their natural habitats.
• Habitat Protection: These areas safeguard critical habitats and promote biodiversity.
• Human Impact: Urban development, unrestricted resource access, and unregulated hunting negatively impact endangered species.
• Conservation Strategy: Effective conservation strategies must prioritize habitat preservation and limit human interference.

By focusing on the establishment of protected areas and wildlife reserves, we can create a sustainable environment for endangered species to thrive and maintain ecological balance.