Researchers have noticed that people whose blood shows : GMAT Critical Reasoning (CR) - Page 2
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 20 Jan 2017, 18:39

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Researchers have noticed that people whose blood shows

Author Message
TAGS:

### Hide Tags

SVP
Joined: 03 Jan 2005
Posts: 2243
Followers: 16

Kudos [?]: 325 [0], given: 0

### Show Tags

10 Oct 2006, 18:31
Just a side note why A (or D, for that matter) should not be the correct answer. In the stem dairy and fresh vegetables are mentioned. A only addresses dairy and D only addresses vegi. Therefore these two options are very unlikely to be the correct answer.
_________________

Keep on asking, and it will be given you;
keep on seeking, and you will find;
keep on knocking, and it will be opened to you.

Director
Joined: 02 Mar 2006
Posts: 580
Location: France
Followers: 1

Kudos [?]: 99 [0], given: 0

### Show Tags

10 Oct 2006, 22:26
Mailtheguru, can you please give the source of this CR.
Senior Manager
Joined: 31 May 2006
Posts: 376
Location: Phoenix AZ
Followers: 1

Kudos [?]: 20 [0], given: 0

### Show Tags

11 Oct 2006, 06:33
karlfurt wrote:
Mailtheguru, can you please give the source of this CR.

1000CR
Senior Manager
Joined: 29 Jan 2011
Posts: 367
Followers: 0

Kudos [?]: 201 [0], given: 87

### Show Tags

18 Jun 2011, 21:19
Is this a flaw or a weaken question? How to identify this? Whats the main difference between the two ? and their approaches? How to use elimination to solve this? Please provide detailed explanation.

Researchers have noticed that people whose blood shows abnormally low levels of calcium usually have laryngeal polyps, which can permanently damage vocal cords and result in partial or even total loss of voice. In order to reduce the risk of polyps, the researchers recommend a diet high in calcium-rich foods such as dairy and green, leafy vegetables.

Which of the following, if true, most strongly suggests that following the researchers' recommendation would NOT be effective?

a)Dairy contains compounds that are difficult for many people to digest.

b)Laryngeal polyps sometimes disappear without treatment.

c)Laryngeal polyps cause a change in body chemistry that blocks the absorption of calcium.

d)Fresh vegetables are not always available in all seasons.

e)Low levels of calcium can sometimes be remedied with vitamin pills.

Last edited by siddhans on 19 Jun 2011, 13:26, edited 1 time in total.
Manager
Joined: 29 Apr 2010
Posts: 77
Followers: 1

Kudos [?]: 67 [2] , given: 1

### Show Tags

19 Jun 2011, 07:06
2
KUDOS
C

Since Laryngeal polyps blocks the absorption of calcium, the diet would not be effective.

siddhans wrote:
Is this a flaw or a weaken question? How to identify this? Whats the main difference between the two ? and their approaches? How to use elimination to solve this? Please provide detailed explanation.

Researchers have noticed that people whose blood shows abnormally low levels of calcium usually have laryngeal polyps, which can permanently damage vocal cords and result in partial or even total loss of voice. In order to reduce the risk of polyps, the researchers recommend a diet high in calcium-rich foods such as dairy and green, leafy vegetables.

Which of the following, if true, most strongly suggests that following the researchers' recommendation would NOT be effective?

a)Dairy contains compounds that are difficult for many people to digest.

b)Laryngeal polyps sometimes disappear without treatment.

c)Laryngeal polyps cause a change in body chemistry that blocks the absorption of calcium.

d)Fresh vegetables are not always available in all seasons.

e)Low levels of calcium can sometimes be remedied with vitamin pills.
VP
Joined: 08 Jun 2010
Posts: 1401
Followers: 3

Kudos [?]: 114 [0], given: 812

### Show Tags

19 Jun 2011, 17:36
C declares that poly causes low calcium and weakening. C is typical causal weakener. if argument said that X creates Y, weakener can say Y creates X.
B a weakener of the type no x but y still exist.

D is correct.

the book CRITICAL REASONING BIBLE is wonderful for this causal relation.

EXCEPT question required you to read well but contains no trick answer choice and so never be 700 level question.
Intern
Joined: 23 Mar 2011
Posts: 12
Followers: 0

Kudos [?]: 1 [0], given: 0

### Show Tags

19 Jun 2011, 20:35
+1 C
Manager
Joined: 15 Feb 2011
Posts: 54
Followers: 3

Kudos [?]: 21 [0], given: 0

### Show Tags

21 Jun 2011, 00:48
im still confused between b,c,d. can someone clearly explain which one is the right answer and why..
Manager
Joined: 11 Feb 2011
Posts: 134
Followers: 3

Kudos [?]: 181 [0], given: 21

### Show Tags

21 Jun 2011, 03:43
OA pls sidhans
_________________

target:-810 out of 800!

Senior Manager
Joined: 17 May 2010
Posts: 299
GMAT 1: 710 Q47 V40
Followers: 4

Kudos [?]: 48 [0], given: 7

### Show Tags

21 Jun 2011, 05:49
C.

If calcium absorption is blocked, it's not going to matter if a person eats a food rich in calcium.
_________________

If you like my post, consider giving me KUDOS!

Moderator
Joined: 01 Sep 2010
Posts: 3089
Followers: 785

Kudos [?]: 6528 [0], given: 1012

### Show Tags

05 Aug 2011, 03:52
thangvietnam wrote:
C declares that poly causes low calcium and weakening. C is typical causal weakener. if argument said that X creates Y, weakener can say Y creates X.
B a weakener of the type no x but y still exist.

D is correct.

the book CRITICAL REASONING BIBLE is wonderful for this causal relation.

EXCEPT question required you to read well but contains no trick answer choice and so never be 700 level question.

I agree for D
_________________
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2021
Followers: 161

Kudos [?]: 1705 [0], given: 376

### Show Tags

05 Aug 2011, 05:01
siddhans wrote:
Is this a flaw or a weaken question? How to identify this? Whats the main difference between the two ? and their approaches? How to use elimination to solve this? Please provide detailed explanation.

Researchers have noticed that people whose blood shows abnormally low levels of calcium usually have laryngeal polyps, which can permanently damage vocal cords and result in partial or even total loss of voice. In order to reduce the risk of polyps, the researchers recommend a diet high in calcium-rich foods such as dairy and green, leafy vegetables.

Which of the following, if true, most strongly suggests that following the researchers' recommendation would NOT be effective?

a)Dairy contains compounds that are difficult for many people to digest.

b)Laryngeal polyps sometimes disappear without treatment.

c)Laryngeal polyps cause a change in body chemistry that blocks the absorption of calcium.

d)Fresh vegetables are not always available in all seasons.

e)Low levels of calcium can sometimes be remedied with vitamin pills.

"C" says it is the polyps that cause reduction of Calcium, not the other way round. Author assumes that the deficiency of calcium causes polyps and thus recommends a solution to increase Calcium in the diet.

This is one of the famous patterns suggested in CR bible for A causes B. If something is assumed to be a cause of an effect, a weakener would be a statement that just proves the reverse that B causes A.

Ans: "C"
_________________
Manager
Joined: 11 Jul 2009
Posts: 175
WE: Design (Computer Software)
Followers: 1

Kudos [?]: 51 [1] , given: 69

### Show Tags

05 Aug 2011, 11:34
1
KUDOS
carcass wrote:
thangvietnam wrote:
C declares that poly causes low calcium and weakening. C is typical causal weakener. if argument said that X creates Y, weakener can say Y creates X.
B a weakener of the type no x but y still exist.

D is correct.

the book CRITICAL REASONING BIBLE is wonderful for this causal relation.

EXCEPT question required you to read well but contains no trick answer choice and so never be 700 level question.

I agree for D

The argument says dairy and green, leafy vegetables so even if vegetables are not available the argument does not say anything about dairy.....
I think C is a better option.
_________________

Kaustubh

Intern
Joined: 06 Jul 2011
Posts: 25
Followers: 1

Kudos [?]: 10 [0], given: 0

### Show Tags

05 Aug 2011, 12:08
Another way to perceive it is as follows:
We have a conclusion, In order to reduce the risk of polyps, the researchers recommend a diet high in calcium-rich foods such as dairy and green, leafy vegetables.
The author has concluded the above result, and in doing so makes a tacit assumption that a diet high in calcium will increase the abnormal low level of calcium in the blood.
However, he states a relation in the stimulus: low calcium -> laryngeal polyp -> other damages, before arriving at his conclusion.
Now consider the assumption as an indispensable pillar for the argument. In other words, the whole argument will fall apart if the assumption is deemed to be false. Hence to weaken the argument, or the recommendation here, all you need to do is attack the assumption, and you are done.

(C), 'blocking the absorption of calcium', attacks the assumption such that a diet high in calcium will NOT increase the abnormal low level of calcium in the blood
_________________

squeakvm

Director
Status: Prep started for the n-th time
Joined: 29 Aug 2010
Posts: 707
Followers: 6

Kudos [?]: 166 [0], given: 37

### Show Tags

05 Aug 2011, 21:14
+1 for C. What is the OA?

Crick
Manager
Joined: 13 Nov 2009
Posts: 120
Location: India
Concentration: Finance, Marketing
GPA: 4
WE: General Management (Insurance)
Followers: 1

Kudos [?]: 9 [0], given: 16

### Show Tags

05 Aug 2011, 21:18
C.+1.
Manager
Joined: 06 Apr 2011
Posts: 77
Location: India
GMAT 1: Q V
Followers: 0

Kudos [?]: 15 [0], given: 22

### Show Tags

06 Aug 2011, 04:29
Ans. C

Quote:
Is this a flaw or a weaken question? How to identify this? Whats the main difference between the two ? and their approaches? How to use elimination to solve this? Please provide detailed explanation.

This is a weaken Q as it is asking us to find an answer with would make the researchers' recommendation ineffective or weaken it.

Weaken Q can be identified by words such as : weaken, undermine, question the validity, cast doubt, most calls to question (someone's opinion or the conclusion)

Solve Weaken Q by:
A) identify an alternate cause effect. if x -> y; identify that Z -> y
B) reverse the relations. e.g in the Q posted by you -- calcium causes l polyps, reverse it to -- l polyps is the cause for low calcium content
C) show that change may not occur when cause occurs.

Flaw Question:

Flaw questions ask test-takers to identify a logical flaw between the assumption and the conclusion.

one e.g of a flow Q is:
(from kaplan) city A reported 2500 violent crimes and city B reported 1000 violent crimes. hence city B has low crime rate than city A
Flaw in the above argument is that - the data is not comparable since the population of city A is 20 times greater than city B

btw, you could refer to whiplash's CR guide: cr-guide-100473.html

Thanks,

Asher
_________________

Regards,
Asher

Manager
Joined: 10 Jan 2011
Posts: 244
Location: India
GMAT Date: 07-16-2012
GPA: 3.4
WE: Consulting (Consulting)
Followers: 0

Kudos [?]: 57 [0], given: 25

### Show Tags

16 Sep 2011, 01:31
The conclusion of the argument states that low calcium diet causes polyps. The asumption here is polyps does not causes low level of calcium. to weaken the conclusion either assumption shold fail or given options should directly attack the conlusion. option C makes the unstated assumption fails. hence answer is C
_________________

-------Analyze why option A in SC wrong-------

Senior Manager
Status: MBAing!!!!
Joined: 24 Jun 2011
Posts: 311
Location: United States (FL)
Concentration: Finance, Real Estate
GPA: 3.65
WE: Project Management (Real Estate)
Followers: 6

Kudos [?]: 52 [0], given: 56

### Show Tags

16 Sep 2011, 14:32
I picked C....based on the argument, low levels of calcium is not the cause of laryngeal polyps, it might be a consequence of having laryngeal polyps
Manager
Status: Retaking next month
Affiliations: None
Joined: 05 Mar 2011
Posts: 229
Location: India
Concentration: Marketing, Entrepreneurship
GMAT 1: 570 Q42 V27
GPA: 3.01
WE: Sales (Manufacturing)
Followers: 5

Kudos [?]: 113 [0], given: 42

### Show Tags

16 Sep 2011, 19:58
+1 for C.

Took me 1:40
Re: MGMAT CR   [#permalink] 16 Sep 2011, 19:58

Go to page   Previous    1   2   3    Next  [ 48 posts ]

Similar topics Replies Last post
Similar
Topics:
4 A researcher discovered that people who have low levels of 18 27 Aug 2009, 05:22
A researcher discovered that people who have low levels of 8 03 Nov 2008, 13:22
A researcher discovered that people who have low levels of 3 06 Jun 2008, 06:46
87 A researcher discovered that people who have low levels of 27 04 Jun 2008, 23:06
A researcher discovered that people who have low levels of 7 27 May 2007, 10:48
Display posts from previous: Sort by