Which of the following regions is characterized by its most populous land in Georgia?

The Piedmont region is characterized by being the most populous area in Georgia, primarily due to its strategic location and economic opportunities. This region includes major cities such as Atlanta, the state's capital, which serves as a significant cultural and economic hub. The combination of urban development, transportation infrastructure, educational institutions, and job availability in the Piedmont has attracted a large population.

In addition to its popularity, the Piedmont features a mix of residential, commercial, and industrial areas that contribute to its densification. It also enjoys a relatively moderate climate and fertile land, which have historically supported agriculture and have allowed it to grow into an urbanized area.

Other regions, while important to the state's geography and economy, do not match the Piedmont in terms of population. The Coastal Plain is known for its agricultural output but is less densely populated. The Blue Ridge region, characterized by its mountainous terrain, has fewer residents due to its rugged landscape. Similarly, the Plateau region has limited population density and development compared to the more urbanized Piedmont. Thus, the Piedmont stands out as the most populous region in Georgia.