In Swartkans territory, archaeologists discovered charred : GMAT Critical Reasoning (CR)
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# In Swartkans territory, archaeologists discovered charred

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Manager
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In Swartkans territory, archaeologists discovered charred [#permalink]

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12 Jul 2007, 08:23
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In Swartkans territory, archaeologists discovered charred bone fragments dating back 1 million years. Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white stinkwood, the most common tree around Swartkans.
Which of the following, if true, would, together with the information above, provide the best basis for the claim that the charred bone fragments are evidence of the use of fire by early hominids?
(A) The white stinkwood tree is used for building material by the present-day inhabitants of Swartkans.
(B) Forest fires can heat wood to a range of temperatures that occur in campfires.
(C) The bone fragments were fitted together by the archaeologists to form the complete skeletons of several animals.
(D) Apart from the Swartkans discovery, there is reliable evidence that early hominids used fire as many as 500 thousand years ago.
(E) The bone fragments were found in several distinct layers of limestone that contained primitive cutting tools known to have been used by early hominids.
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12 Jul 2007, 08:56
pawan82 wrote:
In Swartkans territory, archaeologists discovered charred bone fragments dating back 1 million years. Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white stinkwood, the most common tree around Swartkans.
Which of the following, if true, would, together with the information above, provide the best basis for the claim that the charred bone fragments are evidence of the use of fire by early hominids?
(A) The white stinkwood tree is used for building material by the present-day inhabitants of Swartkans.
(B) Forest fires can heat wood to a range of temperatures that occur in campfires.
(C) The bone fragments were fitted together by the archaeologists to form the complete skeletons of several animals.
(D) Apart from the Swartkans discovery, there is reliable evidence that early hominids used fire as many as 500 thousand years ago.
(E) The bone fragments were found in several distinct layers of limestone that contained primitive cutting tools known to have been used by early hominids.

E it is. It clearly links the early hominids to the bone fragments and, hence, to the use of fire.
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12 Jul 2007, 12:02
Between D and E I am inclined towards D. E says that the hominids used cutting tools and it seems like a stretch to assume that they used fire too.

In D, atleast we have the info that they used fire 500000 yrs back. Of course it is not good to assume that they used fire 1 million yrs back. But this seems to be the best choice of the lot
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12 Jul 2007, 12:04
D is wrong for the very reason you said, dahcrap =P

E because the bone fragments are linked to the cutting tools that the early hominids and the cutting tools were used to get wood for burning. It all fits together
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13 Jul 2007, 20:38
OA is E
13 Jul 2007, 20:38
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