What’s the correct answer? Read this excerpt from Alan Weisman's "The City Without Us":
"When this pump facility shuts down,' says [Paul] Schuber,
"in half an hour water reaches a level where trains can't
pass anymore."
Which claim does the excerpt most clearly support?
A. The human impact on the environment is permanent.
B. Cities provide ecosystems just like forests and deserts.
C. Natural disasters will ultimately lead to humanity's downfall.
D. Without humanity's presence, New York City would quickly
deteriorate.