I believe the final answer is correct. Water is a desert's scarcest recourse. <span />
<span>Factories and their corresponding jobs were located in cities and created economic opportunities for migrants.</span>
Urban Sprawl is pretty much the migration of a population from a populated city or town to rural land
It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.
Stage 2 because thats when it starts to form like a rope apperance
