The best thesis statement would be C
I believe the best answer for this question is "entropy." Entropy is a scientific term referring to thermodynamics. It measures both the order and the disorder of a system. Order, or disorder, are both defined by how close the system is to equilibrium. Hope this helps. Also, keep in mind to ask questions in the proper category - this would be most suited to science, rather than English. Thanks.
Answer:
In some cases, people used to look at other's shoes to see what type of wealth (or class) they had. Usually, richer people would have fancier shoes, and poorer, or middle class, would have more normal ones.