Which region is the largest geographic region among the following?

• A. Appalachian Plateau
• B. Coastal Plain
• C. Piedmont
• D. Blue Ridge

Answer: (B)

Understanding how land area varies across a state's geographic regions helps explain why some regions are larger than others. The Coastal Plain is the largest region because it stretches across a wide portion of the southern part of the state, from the coast inland to where the land starts to rise again at the Fall Line. It is flatter and at a lower elevation than the other regions, which are narrower and more mountainous or higher in elevation. The Blue Ridge and Appalachian Plateau occupy smaller, more limited areas in the north, while the Piedmont sits between them but covers less overall than the Coastal Plain. So the Coastal Plain has the most land area.