Read this passage from “the city without us” by alan weisman:

ruins of high-rises echo the love song of frogs breeding in manhattan’s reconstituted streams, now stocked with alewives and mussels dropped by seagulls. herring and shad have returned to the hudson, though they spent some generations adjusting to radioactivity trickling out of indian point nuclear power plant, 35 miles north of times square, after its reinforced concrete succumbed. missing, however, are nearly all fauna adapted to us. the seemingly invincible cockroach, a tropical import, long ago froze in unheated apartment buildings.

which two ideas does the passage most clearly develop?
a. nature can destroy creations that were thought indestructible; humans aren’t as powerful as the forces of nature.
b. nature pays a price for our disrespect to the environment; nature’s retribution can be a frightening thing.
c. as the human race goes, so do the forces of nature that affect us; nature cannot destroy what people have made.
d. eventually nature will reclaim urban centers; animal life is less resilient than human life.