What is one of the primary responsibilities of the California Department of Fish and Wildlife?

The primary responsibility of the California Department of Fish and Wildlife is wildlife habitat protection. This agency is tasked with managing and protecting California's diverse wildlife resources and their habitats. Its responsibilities include overseeing habitat conservation, implementing programs to ensure biodiversity, and conducting research on wildlife populations and their ecosystems. Protecting habitats is crucial for maintaining the balance of ecosystems in California, which is essential for the survival of various species, including those that are endangered or threatened.

Other options, such as transportation regulation, residential zoning, and urban development, fall outside the purview of the Department of Fish and Wildlife and are typically managed by other governmental agencies. Hence, focusing on wildlife habitat protection aligns directly with the department's mission and goals.