Which region receives the most rainfall among these regions?

• A. Piedmont
• B. Valley and Ridge
• C. Blue Ridge
• D. Coastal Plain

Answer: (C)

The main idea here is how elevation and terrain influence rainfall. When moist air from the Atlantic moves over tall mountains, it is forced to rise. As it climbs, the air cools and water vapor condenses, producing a lot of rain. The Blue Ridge is the highest and most rugged of the options, so it intercepts and releases more moisture, leading to heavier rainfall overall.

The Coastal Plain is flatter and closer to sea level, so it generally has less rainfall than the mountains. The Piedmont gets moderate rainfall, and the Valley and Ridge, with its alternating ridges, tends to have less moisture accumulation than the Blue Ridge. So the region that gets the most rainfall among these is the Blue Ridge.