The geographic significance of the Piedmont region of Georgia can be described by multiple aspects, but the most accurate response based on the provided options is:
A It is made up of rolling hills and is home to Stone Mountain.
This option highlights the physical geography of the region, which is characterized by its rolling hills and notable landmarks like Stone Mountain. While options B, C, and D have some merit, they do not specifically encapsulate the overall geographic significance of the Piedmont region in the same way.