Hi! I’m pretty sure you’re right with the first one!
The one that you have picked is correct
The Valley and Ridge region is a small area in the north west corner of Georgia. The area also represents the westernmost region of the Appalachian Mountains. The area is also bounded to the east by the Blue Ridge. The topography of the ridge is dominated by erosion that expose alternating layers of hard and soft sedimentary rocks that were deformed during the orogeny of the Appalachian Mountains.
It is "<span>a. Indonesia" that has the most islands from the options on the list, since Indonesia has roughly 17,000 islands, many of which haven't been named. </span>