I used "they
" as a key for this SCNeanderthals had a vocal tract that resembled those of the apes
and so were probably without language, a shortcoming that may explain why they
were supplanted by our own species.
had a vocal tract that resembled those of the apes- ambiguous reference
had a vocal tract resembling an ape's
(C) The vocal tracts
resembled an ape's- ambiguous reference
(D) The Neanderthal's vocal tracts
resembled the apes'- incorrect reference
(E) The vocal tracts
of the Neanderthals
resembled those of the apes- ambiguous reference
Please, correct me if I'm wrong.
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