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Scientists believe they have discovered

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Scientists believe they have discovered  [#permalink]

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New post 04 Jun 2015, 03:50
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  55% (hard)

Question Stats:

65% (02:08) correct 35% (02:12) wrong based on 178 sessions

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Scientists believe they have discovered the wreck of the USS Harvard, sunk by Japanese torpedoes during World War II. Their conclusions are drawn from underwater searches by mini-submarines of the area about 4 miles of Midway Island in the Pacific Ocean during what started out as offshore oil platform accident procedures. These are some military historians that are skeptical about the scientists'claim, on the basis that sophisticated sonar equipment has not identified the ship as, indeed, the Harvard.


Which of the following, if true, would weaken the historians'arguments?

A) Thorough searching by divers and bathyscopes has not located the wreck.
B) Three other ships were sunk in this area during World War II.
C) The ship's last known position was 20 miles east of Midway
D) The use of sonar only enables the user to identify the shape and dimension of a wreck.
E) It is not known whether the Harvard suffered much structural damage before being sunk.

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Re: Scientists believe they have discovered  [#permalink]

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New post 16 Jan 2017, 11:56
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Scientists believe they have discovered the wreck of the USS Harvard, sunk by Japanese torpedoes during World War II. Their conclusions are drawn from underwater searches by mini-submarines of the area about 4 miles of Midway Island in the Pacific Ocean during what started out as offshore oil platform accident procedures. These are some military historians that are skeptical about the scientists'claim, on the basis that sophisticated sonar equipment has not identified the ship as, indeed, the Harvard.


Which of the following, if true, would weaken the historians'arguments?

A) Thorough searching by divers and bathyscopes has not located the wreck.
Strengthens historians claims.
B) Three other ships were sunk in this area during World War II.
[color=#ed1c24]Strengthens historians claims.[/color]
C) The ship's last known position was 20 miles east of Midway
[color=#ed1c24]Strengthens historians claims.[/color]
D) The use of sonar only enables the user to identify the shape and dimension of a wreck.
Correct answer as it weakens the historians claim that sonar did not identify the wreck to be USS harward.
E) It is not known whether the Harvard suffered much structural damage before being sunk.
Out of scope.
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Re: Scientists believe they have discovered  [#permalink]

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New post 20 Sep 2017, 11:03
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Could you please let me know how D weakens the historians' claim. Apparently, historians are skeptical about the occurrence of the ship , D seems to be strengthening their claim , shouldn't the and be C.
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Re: Scientists believe they have discovered  [#permalink]

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New post 17 Feb 2019, 03:06
gmt1 wrote:
Scientists believe they have discovered the wreck of the USS Harvard, sunk by Japanese torpedoes during World War II. Their conclusions are drawn from underwater searches by mini-submarines of the area about 4 miles of Midway Island in the Pacific Ocean during what started out as offshore oil platform accident procedures. These are some military historians that are skeptical about the scientists'claim, on the basis that sophisticated sonar equipment has not identified the ship as, indeed, the Harvard.


Which of the following, if true, would weaken the historians'arguments?

A) Thorough searching by divers and bathyscopes has not located the wreck.
B) Three other ships were sunk in this area during World War II.
C) The ship's last known position was 20 miles east of Midway
D) The use of sonar only enables the user to identify the shape and dimension of a wreck.
E) It is not known whether the Harvard suffered much structural damage before being sunk.


I disagree with OA-D.
Two reasons -
1. We are not expected to know what a sonar equipment is - whether it identifies a ship or wreck of a ship.
2. The options rules out the possibility that the historians, basis the shape & dimension of wreck are able to infer that the ship is not USS Harvard. We aren't supposed to have a knowledge whether or not we can recognize a ship basis the shape & dimension of a wreck.

I chose C. C is also not perfect but best of all. If it was a last spotted 20miles away Midway then there is a possibility that it was traveling towards Midway & was sunk when it was 4miles away from Midway. C is not the perfect answer since the direction of travel of ship is not known; it may happen that ship was spotted 20 miles from Midway travelling away from Midway.
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Re: Scientists believe they have discovered   [#permalink] 17 Feb 2019, 03:06
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Scientists believe they have discovered

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