Why Is the Power of Social Structures Most Obvious to Us

Why is the power of social structures most obvious to us after natural disasters?

A) Natural disasters have a distinct tendency to disrupt social structures in ways that man-made disasters do not.
B) Social structures are most obvious to us when they are absent or when they break down,as in the aftermath of a hurricane or tsunami.
C) People are grateful for social structures that are both limiting and enabling.
D) Social structures are delicate and often break down with even the slightest strain.