Because chickens lack teeth, they need another way to break : GMAT Sentence Correction (SC)
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# Because chickens lack teeth, they need another way to break

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Because chickens lack teeth, they need another way to break [#permalink]

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06 Nov 2012, 17:49
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Difficulty:

55% (hard)

Question Stats:

47% (02:13) correct 53% (01:02) wrong based on 169 sessions

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Because chickens lack teeth, they need another way to break apart the food they eat before reaching the stomach, and for this reason, chickens have a gizzard in which stones they swallow are used to grind their food.

A) before reaching the stomach, and for this reason, chickens have a gizzard in which stones they swallow are used to grind their food.
B) before it reaches the stomach, and for this reason, chickens have a gizzard in which stones they have swallowed is used to grind their food.
C) before it reaches the stomach, and for this reason, chickens have a gizzard in which stones they swallow are used to grind their food.
D) before reaching the stomach, and for this reason, chickens have a gizzard in which stones they have swallowed is used to grind their food.
E) before it reaches the stomach, and for this reason, chickens have a gizzard in which stones they have swallowed are used to grind their food.

[Reveal] Spoiler:
This question focuses on verb tense and agreement, as well as general rhetorical construction. In this sentence all of the verbs agree with their subjects. However, the phrase before reaching the stomach does not have a clear subject. It appears to modify they, the chickens, instead of food. The present tense verb swallow should be replaced with the present perfect verb have swallowed in order to indicate that the swallowing occurred before the use of the stones.

A) The phrase before reaching the stomach does not have a clear subject. It appears to modify they, the chickens, instead of food.The present tense verb swallow should be replaced with the present perfect verb have swallowed in order to indicate that the swallowing occurred before the use of the stones.

B) The singular verb is does not agree with the plural subject stones. Is should be in the plural form are.

C) swallow should be in past perfect have swallowed

D) The phrase before reaching the stomach does not have a clear subject. It appears to modify they, the chickens, instead of food. The singular verb is does not agree with the plural noun stones. Is should be in the plural form are.

E) This sentence is correct as is. In this sentence all of the verbs agree with their subjects and are in the correct tenses. The modifying phrases do not allow for any confusion.
[Reveal] Spoiler: OA

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Re: Because chickens lack teeth, they need another way to break [#permalink]

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20 Jan 2013, 10:55
i have a doubt how the phrase "before reaching the stomach" modifies chicken,in my view the phrase is clearly modifying the "food".
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Re: Because chickens lack teeth, they need another way to break [#permalink]

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20 Jan 2013, 11:10
Hi Pavanapaone, You're absolutely correct, it should modify 'food'.

The fact that it does not clearly do this in A is one of the reasons it is wrong.

Answer E resolves this, (and the other mistakes in the original - as described by the OE in the original post)

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Re: Because chickens lack teeth, they need another way to break [#permalink]

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18 Jan 2014, 20:57
Why C is wrong?

Posted from GMAT ToolKit
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Re: Because chickens lack teeth, they need another way to break [#permalink]

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18 Jan 2014, 21:27
gorsar wrote:
Why C is wrong?

Posted from GMAT ToolKit

Between C & E
C) before it reaches the stomach, and for this reason, chickens have a gizzard in which stones they swallow are used to grind their food.
This option doesn't clearly tell us whether Chickens swallow stones to grind food or Chickens grind food using stones that are previously swallowed.

E) before it reaches the stomach, and for this reason, chickens have a gizzard in which stones they have swallowed are used to grind their food.
Correctly states that the stones, swallowed previously, grind food.
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Re: Because chickens lack teeth, they need another way to break [#permalink]

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01 Dec 2016, 01:15
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Because chickens lack teeth, they need another way to break [#permalink]

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04 Dec 2016, 09:07
Advice: those sources that are not specified should be kicked out of the question bank.
Re: Because chickens lack teeth, they need another way to break   [#permalink] 04 Dec 2016, 09:07
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