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# Over the last century, paleontologists have used small

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Manager
Joined: 11 Nov 2004
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Over the last century, paleontologists have used small [#permalink]

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29 Nov 2004, 13:59
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Over the last century, paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species. This
classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.

Which of the following, if true, would enable the conclusion of the argument to be properly drawn?

(A) Not every species that lived in a given area is preserved as a fossil.

(B) At least one individual of every true species of triceratops has been discovered as a fossil specimen.

(C) No geographical area ever supports more than three similar species at the same time.

(D) In many species, individuals display quite marked variation.

(E) Differences between fossil specimens of triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.

thanks.
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Manager
Joined: 30 Jul 2004
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29 Nov 2004, 14:48
Wow ! Before I could take a look at the options I knew the answer........

Explanation :The question is asking last piece of evidence that would be added to the partial evidence already given....

Conclusion - The classification is incorrect

Partial evidence - Because eleven classified species came from the same area......

Evidence needed --- No more than 3 species can be in a geographical location...

Hope it make sense.....
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30 Nov 2004, 14:07
tricky . yup but makes sense with C
30 Nov 2004, 14:07
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# Over the last century, paleontologists have used small

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