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Prehistoric chimpanzee species used tools similar to those

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Prehistoric chimpanzee species used tools similar to those [#permalink] New post 11 Dec 2010, 23:37
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6. Prehistoric chimpanzee species used tools similar to those used by prehistoric humans: prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests. Therefore, the tools must have been used by humans rather than chimpanzees.

Which of the following is an assumption on which the argument depends?

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.

(D) The area where the tools were found was not a forest at the time the tools were in use.

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.

pls negate and explain your reasoning, if you just leave a answer choice with no explanation then it'll be useless to us. :-D
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Re: LSAT: Prehistoric chimpanzee species [#permalink] New post 12 Dec 2010, 00:20
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gtr022001 wrote:
6. Prehistoric chimpanzee species used tools similar to those used by prehistoric humans: prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests. Therefore, the tools must have been used by humans rather than chimpanzees.

Which of the following is an assumption on which the argument depends?

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.

(D) The area where the tools were found was not a forest at the time the tools were in use.

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.

pls negate and explain your reasoning, if you just leave a answer choice with no explanation then it'll be useless to us. :-D


Premise 1:Prehistoric chimpanzee species used tools similar to those used by prehistoric humans

Premise 2:prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests.

Conclusion: Therefore, the tools must have been used by humans rather than chimpanzees.

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.
<Irrelevant>

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.
<Doesn't affect the conclusion>

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.
< Even if prehistoric humans once ventured in to forest , the conclusion is not affected>

(D) The area where the tools were found was not a forest at the time the tools were in use.
<if the area was a forest at the time tools were found ==> tools used by chimpanzees. Breaks the conclusion>

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.
<irrelevant and doesn't affect the conclusion>
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Re: LSAT: Prehistoric chimpanzee species [#permalink] New post 13 Dec 2010, 03:22
Thabk wrote:
gtr022001 wrote:
6. Prehistoric chimpanzee species used tools similar to those used by prehistoric humans: prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests. Therefore, the tools must have been used by humans rather than chimpanzees.

Which of the following is an assumption on which the argument depends?

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.

(D) The area where the tools were found was not a forest at the time the tools were in use.

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.

pls negate and explain your reasoning, if you just leave a answer choice with no explanation then it'll be useless to us. :-D


Premise 1:Prehistoric chimpanzee species used tools similar to those used by prehistoric humans

Premise 2:prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests.

Conclusion: Therefore, the tools must have been used by humans rather than chimpanzees.

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.
<Irrelevant>

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.
<Doesn't affect the conclusion>

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.
< Even if prehistoric humans once ventured in to forest , the conclusion is not affected>

(D) The area where the tools were found was not a forest at the time the tools were in use.
<if the area was a forest at the time tools were found ==> tools used by chimpanzees. Breaks the conclusion>

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.
<irrelevant and doesn't affect the conclusion>

My reasoning is quite similar to thabks's
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Re: LSAT: Prehistoric chimpanzee species [#permalink] New post 13 Dec 2010, 06:39
Thabk wrote:
gtr022001 wrote:
6. Prehistoric chimpanzee species used tools similar to those used by prehistoric humans: prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests. Therefore, the tools must have been used by humans rather than chimpanzees.

Which of the following is an assumption on which the argument depends?

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.

(D) The area where the tools were found was not a forest at the time the tools were in use.

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.

pls negate and explain your reasoning, if you just leave a answer choice with no explanation then it'll be useless to us. :-D


Premise 1:Prehistoric chimpanzee species used tools similar to those used by prehistoric humans

Premise 2:prehistoric tools recently found in East Africa are of a type used by both species. The area where the tools were found, however, is a savanna, and whereas there were prehistoric humans who lived in savanna habitats, prehistoric chimpanzees lived only in forests.

Conclusion: Therefore, the tools must have been used by humans rather than chimpanzees.

(A) Prehistoric humans did not carry their tools with them when they traveled from one place to another.
<Irrelevant>

(B) Since the evolution of the first primates, East Africa has been predominantly savanna.
<Doesn't affect the conclusion>

(C) Prehistoric humans never ventured into areas of the forest that were inhabited by prehistoric chimpanzees.
< Even if prehistoric humans once ventured in to forest , the conclusion is not affected>

(D) The area where the tools were found was not a forest at the time the tools were in use.
<if the area was a forest at the time tools were found ==> tools used by chimpanzees. Breaks the conclusion>

(E) The prehistoric ancestors of modern chimpanzees were not capable of using tools more sophisticated than those found recently in East Africa.
<irrelevant and doesn't affect the conclusion>


This is how i found my answer.

D
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Re: LSAT: Prehistoric chimpanzee species [#permalink] New post 14 Dec 2010, 01:04
Its D

same reason as posted above
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Re: LSAT: Prehistoric chimpanzee species [#permalink] New post 06 May 2011, 02:24
simple D .no other option manages to confuse hence a very simple question
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Re: LSAT: Prehistoric chimpanzee species   [#permalink] 06 May 2011, 02:24
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