What does the Species At Risk Act aim to protect?

The Species At Risk Act is focused specifically on the protection of endangered and threatened species along with their critical habitats. This legislation is designed to prevent the extinction of species and ensure their recovery by providing a framework for the conservation and management of these organisms and their environments. The act emphasizes the importance of maintaining biodiversity and ecological health, which are vital for the health of the environment as a whole.

While the other options touch on important topics such as water quality, agricultural sustainability, and rural income stability, they do not align with the primary focus of the Species At Risk Act. The act specifically targets species that are at risk of extinction and their necessary habitats, making option B the only correct choice relevant to the act's goals.