Let's consider your choices.
I's certainly not E - you can's say "The vocal tracts.....and so were probably w/o a language". Who was without a language? The Neanderthals and not their vocal tracts, right?
And it's not C either. Were the Neanderthals' vocal tracts like apes? No! But they could have been
similar to the vocal tracts of the apes, right?
Neanderthals 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.
(A) Neanderthals had a vocal tract that resembled those of the apes
(B) Neanderthals had a vocal tract resembling an ape’s
(C) The vocal tracts of Neanderthals resembled an ape’s
(D) The Neanderthal’s vocal tracts resembled the apes’
(E) The vocal tracts of the Neanderthals resembled those of the apes
I find this really confusing. E looks attractive, and so is C and B....hehehe....need help here.