Which of the following states is known for its diverse geography including mountains, forests, and beaches?

California is known for its remarkable diversity in geography, which encompasses a wide range of natural features. The state boasts the majestic Sierra Nevada mountain range, including iconic peaks like Mount Whitney, the highest point in the contiguous United States. Alongside these mountains, California's landscape is also characterized by expansive forests, such as those found in the Redwood National and State Parks, which are home to some of the tallest trees in the world.

Additionally, California offers a stunning coastline along the Pacific Ocean, featuring beautiful beaches from well-known destinations like Malibu and San Diego to more secluded spots in places like Big Sur. This combination of mountains, forests, and beaches makes California unique compared to the other states listed, which have more limited geographical variety.

Florida, while famous for its beaches, primarily features flat terrain, swamps, and wetlands without the significant elevation changes found in California. Oregon also has diverse geography, including coastal areas and mountains, but it lacks the immense variety of ecosystems and climates that California offers. North Dakota, on the other hand, is predominantly flat prairie and does not have as many diverse geographical features. Therefore, California's diverse landscape is what sets it apart as the correct answer.