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Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in

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Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in  [#permalink]

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New post 23 Aug 2018, 06:52
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Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in warm-blooded species that minimize water loss during breathing. According to some paleobiologists, this implies that all dinosaurs were cold-blooded. These paleobiologists must be mistaken, however, for fossil records show that some dinosaur species lived in Australia and Alaska, where temperatures drop below freezing. Only warm-blooded animals could survive such temperatures.

Which one of the following most accurately describes the role played in the researcher's argument by the claim that only warm-blooded animals could survive temperatures below freezing?

(A) It is presented as a potential counterexample to the argument's main conclusion.
(B) It is a premise offered in support of the argument's main conclusion.
(C) It is presented as counterevidence to the paleobiologists' assertion that dinosaurs lack turbinates.
(D) It is the argument's main conclusion.
(E) It is an intermediate conclusion for which the claim that some dinosaur species lived in Australia and Alaska is offered as support.

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Re: Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in  [#permalink]

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New post 23 Aug 2018, 09:08
B imo
Argument's main conclusion is that paleobiologists are wrong in saying dinosaurs were cold blooded. Fossil records are evidence and the bold statement is used as a basis for that conclusion.

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Re: Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in  [#permalink]

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New post 23 Aug 2018, 11:01
AshutoshB wrote:
Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in warm-blooded species that minimize water loss during breathing. According to some paleobiologists, this implies that all dinosaurs were cold-blooded. These paleobiologists must be mistaken, however, for fossil records show that some dinosaur species lived in Australia and Alaska, where temperatures drop below freezing. Only warm-blooded animals could survive such temperatures.

Which one of the following most accurately describes the role played in the researcher's argument by the claim that only warm-blooded animals could survive temperatures below freezing?

(A) It is presented as a potential counterexample to the argument's main conclusion.
(B) It is a premise offered in support of the argument's main conclusion.
(C) It is presented as counterevidence to the paleobiologists' assertion that dinosaurs lack turbinates.
(D) It is the argument's main conclusion.
(E) It is an intermediate conclusion for which the claim that some dinosaur species lived in Australia and Alaska is offered as support.

LSAT



Must be (B)
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Re: Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in  [#permalink]

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New post 24 Aug 2018, 00:33
Conclusion of argument is : These paleobiologists must be mistaken.

After Process of elimination, I kept both B and C.

but C says, 'counterevidence to the paleobiologists' assertion'.

it is not counterevidence as Paleobiologists do not give any evidence in 1st place.
They just declare because of some fact, dinosaurs must be cold blooded.

Only researcher gave us the evidence of finding some species in Alaska and Australia .
So Final sentence wont serve as a Counter-evidence.
Thus B is winner.
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Re: Researcher: Dinosaurs lack turbinates-nasal cavity bone structures in &nbs [#permalink] 24 Aug 2018, 00:33
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