Study the major mountain ranges on the map of the United States. A map of the United States with mountain ranges labeled A, B, C, and D. The mountain range in Oregon and Washington is labeled A. The mountain range in California and Arizona is labeled B. The mountain range from Montana to Texas is labeled C. The mountain range from New York to Georgia is labeled D.

Which mountain range is marked with the letter D?

Rocky Mountains
Cascade Mountains
Appalachian Mountains
Sierra Nevada Mountains