Combining enormous physical strength with higher
intelligence, the Neanderthalsappear as equipped for
facing any obstacle the environment could put in their
path, but their relatively sudden disappearance during
the Paleolithic era indicates that an inability to adapt
to some environmental change led to their extinction.
(A) appear as equipped for facing any obstacle the
environment could put in their path,
(B) appear to have been equipped to face any
obstacle the environment could put in their path,
(C) appear as equipped to face any obstacle the
environment could put in their paths,
(D) appeared as equipped to face any obstacle the
environment could put in their paths,
(E) appeared to have been equipped for facing any
obstacle the environment could put in their path,
这个题中path为什么用单数，OG上的解释不太懂，请牛人解释下：while individual Neanderthals may well have followed diff erent paths, this sentence is about the single evolutionary path taken by Neanderthals as a species.
