The correct answer is B: rugged landscape of mountainous land. The terraces are made so that erosion and surface runoff is reduced and the water that would be lost to surface runoff is properly utilized by the plants.
The most logical answer sounds like D.
If it grows underwater then of course it's able to withstand water. <span />
Answer: B. Buoyancy
Explanation: The asthenosphere exerts a buoyant force that pushes up against the lithosphere, and this force resists gravity. The theory of isostasy refers to an equilibrium in buoyancy between the lithosphere and the asthenosphere.
The subject of science is very broad. With that being said, I think there is no official regulatory board that decides the branches of science. Scientific developments are products of joined efforts of different scientists. These scientists could rebuke another's work provided there is evidence. As long as the theory is generally accepted by the scientists and no one rebukes it effectively, then it is a generally accepted fact and everyone adapts it.
Hence, the answer is B.
