Select the correct answer. What is a central idea of the passage? A. Conservationists worked for decades to pass legislation that protects the ecology and landscapes of California's deserts. B. To protect an endangered species of turtle in California, voters have attempted to pass legislation declaring California's parks national preserves. C. People enjoy visiting the various deserts that make up the ecology and landscapes of southern and central California. D. As long as California has been a part of the United States, citizens and visitors have largely preferred to hike rather than to live in its deserts