The correct answer is C.
This excerpt clearly supports the idea that nature is much more powerful than human and everything we have created.
In this excerpt from Alan Weisman's "The City Without Us", the author supports the idea that no matter how big and powerful man-made creations are, nature has the power to destroy all of it. He provides the example of glass and how, even if it is the most durable of human creations, nature could easily transform it into powder.