The right answer for the question that is being asked and shown above is that: "D.)mountains." In the mountain areas of North Carolina's ecological region would you most likely grow sweet potatoes. It grows there very well.
Coastal Plain. The soil is sandier and better for sweet potatoes to grow. I asked my dad, who is a biologist and has worked for North Carolina, in all of its regions, for more than twenty years. Hope this helps.
