B
A and D can’t be true because these create valleys and volcanos and we are not talking about those and C makes no sense because ocean floors are thicker thus making B the answer. hope this helped!
Answer:
The Tropics
Explanation:
The area between the Tropic of Cancer and the Tropic of Capricorn is often called the Tropics. (ever heard of the tropical rainforests this is where they would be found.)