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18 Feb 2020, 02:16
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Difficulty:
75%
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Question Stats:
55% (01:54) correct
45%
(02:08)
wrong
based on 717
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A history book written hundreds of years ago contains several inconsistencies. Some scholars argue that because the book contains inconsistencies, the author must have been getting information from more than one source.
The conclusion cited does not follow unless
(A) authors generally try to reconcile discrepancies between sources
(B) the inconsistencies would be apparent to the average reader of the history book at the present time
(C) the history book’s author used no source that contained inconsistencies repeated in the history book
(D) the author of the history book was aware of the kinds of inconsistencies that can arise when multiple sources are consulted
(E) the author of the history book was familiar with all of the available source material that was relevant to the history book
18 Feb 2020, 04:07
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The history book has inconsistencies, thus the author must have gotten information from more than one source.
This may not be a valid argument because it assumes that the only way to end up with inconsistencies is to get information from multiple sources? Couldn't something else lead to having inconsistencies?
(A) is out of scope. We care whether this book used multiple sources, not about what authors normally do.
(B) is out of scope. Whether the inconsistencies were apparent is irrelevant.
(C) is CORRECT ANSWER because it strengthens the assumption by negating a competing possibility. If the author did use and repeat a source that had its own inconsistencies, we wouldn't be able to conclude that he used multiple sources; maybe the inconsistencies in his work all came from the one he consulted. So it's necessary to assume that he didn't use a source with inconsistencies.
(D) is out of scope. It doesn't matter whether the author was aware.
(E) is far too broad. Why would the author need to be familiar with all the available source material?
FINAL ANSWER IS (C)
Posted from my mobile device
This may not be a valid argument because it assumes that the only way to end up with inconsistencies is to get information from multiple sources? Couldn't something else lead to having inconsistencies?
(A) is out of scope. We care whether this book used multiple sources, not about what authors normally do.
(B) is out of scope. Whether the inconsistencies were apparent is irrelevant.
(C) is CORRECT ANSWER because it strengthens the assumption by negating a competing possibility. If the author did use and repeat a source that had its own inconsistencies, we wouldn't be able to conclude that he used multiple sources; maybe the inconsistencies in his work all came from the one he consulted. So it's necessary to assume that he didn't use a source with inconsistencies.
(D) is out of scope. It doesn't matter whether the author was aware.
(E) is far too broad. Why would the author need to be familiar with all the available source material?
FINAL ANSWER IS (C)
Posted from my mobile device
