Which region is characterized by red clay and gently sloping hills and is the most highly populated region in Georgia, containing most of the state’s major cities, including Atlanta?

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

D. Piedmont

The region characterized by red clay and gently sloping hills, and is the most highly populated region in Georgia, containing most of the state's major cities, including Atlanta is the Piedmont region. So, the correct answer is D. Piedmont.

The correct answer is D. Piedmont.

To find the answer to this question, you can start by researching the regions in Georgia and their characteristics. Then, look for information about the region that is described as having red clay and gently sloping hills. Additionally, you can find out which region in Georgia is the most highly populated and contains major cities such as Atlanta. By combining these pieces of information, you will determine that the answer is the Piedmont region.