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Although some ornithologists contend that the precursors of birds are

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Although some ornithologists contend that the precursors of birds are  [#permalink]

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Although some ornithologists contend that the precursors of birds are arboreal creatures that glide from tree to tree, other believe that they were runners whose front limbs evolved into wings


(A) Although some ornithologists contend that the precursors of birds are arboreal creatures that glide from tree to tree

(B) However, it may be that some ornithologists contend that the precursors of birds were arboreal creatures that glide from tree to tree

(C) Despite that the precursors of birds were, according to some ornithologists, arboreal creatures that glide from tree to tree.

(D) Although some ornithologist contend that the precursors of birds were arboreal creatures that glided from tree to tree.

(E) According to some ornithologists gliding from tree to tree, the precursors of birds are arboreal creatures, that

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Originally posted by Vardan95 on 22 Jun 2017, 10:54.
Last edited by Vardan95 on 22 Jun 2017, 11:48, edited 1 time in total.
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Re: Although some ornithologists contend that the precursors of birds are  [#permalink]

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Although some ornithologists contend that the precursors of birds are arboreal creatures that glide from tree to tree, other believe that they were runners whose front limbs evolved into wings


(A) Although some ornithologists contend that the precursors of birds are arboreal creatures that glide from tree to tree --- present tense 'are' and 'glide' are wrong; The main clause as may be seen is in past tense

(B) However, it may be that some ornithologists contend that the precursors of birds were arboreal creatures that glide from tree to tree -- these prehistoric creatures are not there now to glide. Only a past tense verb is the correct form.

(C) Despite that the precursors of birds were, according to some ornithologists, arboreal creatures that glide from tree to tree. ---- that glided is the correct tense.

(D) Although some ornithologist content that the precursors of birds were arboreal creatures that glided from tree to tree. ---- is the correct choice avoiding the shift of tense.

(E) According to some ornithologists gliding from tree to tree, the precursors of birds are arboreal creatures, that -- this says that the ornithologists are gliding from tree to tree.

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Re: Although some ornithologists contend that the precursors of birds are  [#permalink]

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New post 22 Jun 2017, 11:55
In the original sentence, the precursors - are has a subject verb mismatch (since the precursors is plural)
The verb which follows must be were(plural verb for plural subject)

Also the creatures that glide is not right. it must be glided.
Option D corrects both these errors and must be the answer choice
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Re: Although some ornithologists contend that the precursors of birds are  [#permalink]

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New post 05 Jan 2019, 10:22
Vardan95 wrote:
Although some ornithologists contend that the precursors of birds are arboreal creatures that glide from tree to tree, other believe that they were runners whose front limbs evolved into wings


(A) Although some ornithologists contend that the precursors of birds are arboreal creatures that glide from tree to tree

(B) However, it may be that some ornithologists contend that the precursors of birds were arboreal creatures that glide from tree to tree

(C) Despite that the precursors of birds were, according to some ornithologists, arboreal creatures that glide from tree to tree.

(D) Although some ornithologist contend that the precursors of birds were arboreal creatures that glided from tree to tree.

(E) According to some ornithologists gliding from tree to tree, the precursors of birds are arboreal creatures, that


KAPLAN OFFICIAL EXPLANATION:



D.

Since the sentence is about "precursors" or forerunners, and since the non-underlined part of the sentence uses the past tense verb were, the answer has to use were as in (D), not are as in (A) and (E). Also, however it may be that in (B) and despite that in (C) are unidiomatic. (E) makes it sound as though the ornithologists are the ones gliding from tree to tree. (D) is correct: "Although some ornithologists contend that the precursors of birds were arboreal creatures that glided from tree to tree, others believe..."
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Re: Although some ornithologists contend that the precursors of birds are &nbs [#permalink] 05 Jan 2019, 10:22
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Although some ornithologists contend that the precursors of birds are

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