The most logical answer sounds like D.
If it grows underwater then of course it's able to withstand water. <span />
Hoyts theory of urban land use and development emerged in response to changes in TRANSPORTATION
Rural settlement means people living in rural areas, that is, not in the cities (which are urban areas).
Less and less people live in rural areas because there are less jobs there than in the city as our farming becomes more and more industrialized - before more people had to work on the farm, as more things had to be done by hand.
