I take all except C and E so pretty much what that dude said
Answer:
megalopolis
Explanation:
cluster settlement range in size from hamlets to megalopolises. They may be arranged in a hierarchy according to the complexity of their centralizing functions. The hierarchy includes (from smallest to largest): hamlet, village, towns, cities, metropolis, megalopolis.
The answer would be B. The Amazon river being one of the largest rivers in the world has to have a big region. This region takes up 40% and has affect on that percentage too
The layout of the land of something like that