Answer:
C. People often become confused when a city changes extremely quickly.
Step-by-step explanation:
The statement that best reflects the theme of this paragraph is that people often become confused when a city changes extremely quickly because in the paragraph it is mentioned that Alfred T. Andreas seemed overwhelmed and bewildered when he reported the big amount of structures that were being built. From this, you can inferred that people were confused about the changes.
The other options are not right because the paragraph doesn't talk about negative consequences and it doesn't mention a disaster or a negative event.