Which physiographic region is found in North Alabama and is comprised of limestone valleys and uplands with rolling hills?

The correct choice reflects the characteristics of the physiographic region known as a plateau. In North Alabama, plateaus are defined by their elevated terrain that is relatively flat or gently rolling, which can incorporate limestone valleys and uplands. These regions typically arise from geological processes that elevate flat-lying sedimentary rocks, resulting in a landscape punctuated by rolling hills and valleys formed through erosion.

Limestone is particularly significant in this area, as it can lead to the formation of karst features such as sinkholes and caves, further shaping the landscape. The plateau's combination of uplands and valleys showcases the typical features associated with this physiographic classification, making it the correct choice for describing North Alabama's terrain. Understanding the geological makeup and geographic features helps in identifying such regions accurately.