Questions 7-8 Two paleontologists, Dr Tyson and Dr. Rees, : GMAT Critical Reasoning (CR)
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# Questions 7-8 Two paleontologists, Dr Tyson and Dr. Rees,

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Questions 7-8 Two paleontologists, Dr Tyson and Dr. Rees, [#permalink]

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10 May 2005, 15:08
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Questions 7-8

Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tysonâ€™s conclusion.

7. The disagreement between the two paleontologists is over which one of the following?
(A) the relative significance of various aspects of the evidence
(B) the assumption that early hominid footprints are distinguishable from other footprints
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion
(E) the likelihood that early hominids would have walked upright on two feet

8. Which one of the following, if true, most seriously undermines Dr. Tysonâ€™s conclusion?

(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals.
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe.
(C) Footprints shaped like a humanâ€™s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous.
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased.
(E) Most of the other footprints at site G were of animals with hooves.
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Questions 7-8 Two paleontologists, Dr Tyson and Dr. Rees,   [#permalink] 10 May 2005, 15:08
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# Questions 7-8 Two paleontologists, Dr Tyson and Dr. Rees,

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