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Vardan95
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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Vardan95
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

daagh
i am clear with the explanations for all the options,but the modifier "according to some ornithologists" in choice C looks wrong. What entity does it modify? If it modifies "arboreal creatures" then it will be illogical.Am i correct?
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