Answer:
B. Chicago's streets and buildings had been constructed at only three or four feet above the water table.
Step-by-step explanation:
The quote from Paragraph 3 of the passage that supports the paragraph's central idea is "Chicago's streets and buildings had been constructed at only three or four feet above the water table."
The passage speaks about the condition of Chicago. It reveals how despicable and bad Chicago was. The situation in Chicago street made construction of structures and movement of people very difficult. The city was muddy and filled with sewage; as a result of lack of drainage.