Final answer:
Programs seeking to increase biodiversity often focus on protecting rare habitats, such as coral reefs and mangroves, because habitats contain the complex interactions and diversity of life that make up ecosystems.
Step-by-step explanation:
Some programs aim to increase biodiversity by protecting rare habitats such as coral reefs and mangroves. The correct answer to the question is B) Habitats. These programs understand that protecting individual species alone is insufficient to combat the negative impacts of human activities on biodiversity. Instead, creating and enforcing wildlife and ecosystem preserves is more effective. Preserves are land areas designated with varying levels of protection for the living organisms they house. Furthermore, habitat restoration plays a crucial role in improving the biodiversity of degraded ecosystems. Additionally, it's important to note that biodiversity is not only about the number of species but also about genetic diversity, chemical diversity, and ecosystem diversity. The loss of biodiversity threatens ecosystem services that are critical for human agriculture such as pollination, nutrient cycling, pest control, and the maintenance of soil integrity. International treaties like CITES and national legislation like the Endangered Species Act are crucial for the protection of biodiversity.