After the ice recedes, buried in the moraine and eventually
in geologic layers below will be an unnatural concentration
of a reddish metal, which briefly had assumed the form of
wiring and plumbing. Then it was hauled to the dump and
returned to the Earth. The next toolmaker to arrive or
evolve on this planet might discover and use it, but by then
there would be nothing to indicate that it was us who put it
there.
Which claim does the excerpt most clearly support?
O
A. Humanity's impact on the world is ultimately temporary.
0
B. Nature acts swiftly to reclaim abandoned urban areas.
C. Without humanity's presence, New York City would quickly
deteriorate.
D. Cities provide ecosystems just like forests and deserts.

The excerpt goes from a general idea (the context and how the world may change, burying things for the new species) to a particular one (the tool and its original intention, which is the important thing. There, the speaker takes the tool and how it has survived through time (even without its creators) and how the new toolmaker will take it and use it for his own benefit, even if the original intention (created by a species that will have already become extinct by that time, according to the scenario) was different.