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The Smithsonian Museum of Natural History recently unveiled a new

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The Smithsonian Museum of Natural History recently unveiled a new  [#permalink]

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New post 10 Oct 2019, 00:41
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A
B
C
D
E

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  95% (hard)

Question Stats:

19% (01:28) correct 81% (01:49) wrong based on 140 sessions

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The Smithsonian Museum of Natural History recently unveiled a new exhibit featuring all 225 bones of the fossilized skeletons of two Apatosauruses. Despite the fact that both skeletons are from the same species, one has a tail almost one meter longer than the other.

Which of the following, if true, is the least reasonable explanation for the differences in tail length of the Apatosaurus skeletons described in the passage above?

(A) The skeleton with the longer tail is from an animal that lived 2 million years before the one with the shorter tail.

(B) Scientists believe that Apatosauruses would sometimes shed part of their tail in an attempt to escape a predator.

(C) One skeleton is of an immature Apatosaurus while the other is from an adult male.

(D) One skeleton belonged to a male while the other belonged to a female.

(E) Scientists believe that Apatosauruses generally grew in size according to the food supply available in their environment.
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New post 10 Oct 2019, 22:41
All option talk/mention directly about the size or the tail except D.

Can anyone explains me why B is correct and D is incorrect?
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New post 12 Oct 2019, 19:28
VeritasKarishma jennpt AjiteshArun nightblade354 could you please help me with this question, how to eliminate options?
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New post 17 Oct 2019, 15:36
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This is one of those questions where there are some twisted logic and assumptions.

I originally hesitated between A and B until i read the passage again and found " all 225 bones" which means that essentially the fossilized Apatosauruses did retain their full skeletons so it's kind of unreasonable to think that one of them had it's tail "cut" but then i should assume that tails have bones.
(this is a pretty meager attempt to explain my reasoning :lol: )

To be honest, I would really love to know if the gmat test has these types of questions, I personally find the OG CR questions and answers way more "straightforward" logic than those of prep companies.
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New post 21 Oct 2019, 04:57
(A) The skeleton with the longer tail is from an animal that lived 2 million years before the one with the shorter tail.--> possible; may be evolution made the tail bigger

(B) Scientists believe that Apatosauruses would sometimes shed part of their tail in an attempt to escape a predator.-->Doubtful that a bone can be shed; As far as I know, only skin can be shed.

(C) One skeleton is of an immature Apatosaurus while the other is from an adult male.-->possible; one might be a fully grown adult while the other one is not

(D) One skeleton belonged to a male while the other belonged to a female.-->possible; some animals or parts of animals do differ in size between a male and a female

(E) Scientists believe that Apatosauruses generally grew in size according to the food supply available in their environment.-->possible;
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Re: The Smithsonian Museum of Natural History recently unveiled a new   [#permalink] 21 Oct 2019, 04:57
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