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# The following two questions are from GMATPREP. They are

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The following two questions are from GMATPREP. They are [#permalink]

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05 Jul 2008, 17:50
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The following two questions are from GMATPREP. They are slightly different but I don't think the difference is drastic. However, the OA for the questions are totally different (see below). Can someone explain the difference between these two problems that cause them to have different answers? How did you get the correct answer for each one? I am so confused...please help.

In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology through her discovery of the earliest direct evidence of hominid activity and through her painstaking documentation of East African cave paintings.
A. Mary Leakey contributed to archaeology through her discovery of the earliest direct evidence of hominid activity and through her painstaking documentation of
B. Mary Leakey contributed to archaeology by her discovery of the earliest direct evidence of hominid activity and painstakingly documenting
C. Mary Leakey was a contributor to archaeology by discovering the earliest direct evidence of hominid activity and with her painstaking documentation of
D. Mary Leakey's contributions to archaeology include her discovery of the earliest direct evidence of hominid activity and painstakingly documenting
E. Mary Leakey's contributions to archaeology include her discovering the earliest direct evidence of hominid activity and painstaking documentation of

In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting East African cave paintings.
A. Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting
B. Leakey contributed to archaeology by her discovery of the earliest direct evidence of hominid activity and by painstakingly documenting
C. Leakey was a contributor to archaeology with her discovery of the earliest direct evidence of hominid activity and with her painstaking documentation of
D. Leakey’s contributions to archaeology include her discovery of the earliest direct evidence of hominid activity and her painstaking documentation of
E. Leakey’s contributions to archaeology include her discovering the earliest direct evidence of hominid activity and painstaking documentation of

The OA for...
#1 is A#2 is D
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The following two questions are from GMATPREP. They are   [#permalink] 05 Jul 2008, 17:50
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