GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 22 Jan 2019, 15:34

### 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 January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
• ### The winners of the GMAT game show

January 22, 2019

January 22, 2019

10:00 PM PST

11:00 PM PST

In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one.
• ### Key Strategies to Master GMAT SC

January 26, 2019

January 26, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

# A recent study found that snoring, though not common

Author Message
TAGS:

### Hide Tags

Senior CR Moderator
Status: Long way to go!
Joined: 10 Oct 2016
Posts: 1372
Location: Viet Nam
A recent study found that snoring, though not common  [#permalink]

### Show Tags

22 Sep 2017, 07:02
9
00:00

Difficulty:

55% (hard)

Question Stats:

57% (01:03) correct 43% (01:10) wrong based on 477 sessions

### HideShow timer Statistics

A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers. On the basis of this evidence, the author hypothesized that smoking by itself can induce snoring.

Which one of the following, if true, casts the most doubt on the author’s hypothesis?

(A) Stress induces both snoring and smoking in certain individuals.
(B) Obesity induces many individuals to smoke.
(C) Most snorers do not smoke.
(D) Most smokers do not snore.
(E) Both smoking and snoring cause throat problems.

Source: LSAT

_________________
Manager
Joined: 27 Dec 2016
Posts: 236
Concentration: Marketing, Social Entrepreneurship
GPA: 3.65
WE: Marketing (Education)
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

22 Sep 2017, 08:50
broall wrote:
A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers. On the basis of this evidence, the author hypothesized that smoking by itself can induce snoring.

Which one of the following, if true, casts the most doubt on the author’s hypothesis?

(A) Stress induces both snoring and smoking in certain individuals.
(B) Obesity induces many individuals to smoke.
(C) Most snorers do not smoke.
(D) Most smokers do not snore.
(E) Both smoking and snoring cause throat problems.

Source: LSAT

IMO C, this is cause and effect passage. To cast the most doubt, we should provide another possible cause.

C says that most snorers do not smoke, means that smoking is not the cause of snoring.

Waiting for OE.
_________________

There's an app for that - Steve Jobs.

Manager
Joined: 16 Jan 2017
Posts: 63
GMAT 1: 620 Q46 V29
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

22 Sep 2017, 10:23
I would say A... if stress causing snoring and smoking, then people smoking and snoring is caused by stress and not by each other
CR & LSAT Forum Moderator
Status: He came. He saw. He conquered. -- Studying for the LSAT -- Corruptus in Extremis
Joined: 31 Jul 2017
Posts: 455
Location: United States
Concentration: Finance, Economics
A recent study found that snoring, though not common  [#permalink]

### Show Tags

06 Oct 2017, 04:10
1
A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers. On the basis of this evidence, the author hypothesized that smoking by itself can induce snoring.

-- Because of the 'by itself', we need to find an alternate cause. A states an alternate cause. C/D are the same answer, so they are incorrect.

Which one of the following, if true, casts the most doubt on the author’s hypothesis?

(A) Stress induces both snoring and smoking in certain individuals.
(B) Obesity induces many individuals to smoke.
(C) Most snorers do not smoke.
(D) Most smokers do not snore.
(E) Both smoking and snoring cause throat problems.
_________________

D-Day: November 18th, 2017

Need a laugh and a break? Go here: https://gmatclub.com/forum/mental-break-funny-videos-270269.html

Need a CR tutor? PM me!

Director
Joined: 27 May 2012
Posts: 671
A recent study found that snoring, though not common  [#permalink]

### Show Tags

Updated on: 10 Oct 2017, 02:50
broall wrote:
A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers. On the basis of this evidence, the author hypothesized that smoking by itself can induce snoring.

Which one of the following, if true, casts the most doubt on the author’s hypothesis?

(A) Stress induces both snoring and smoking in certain individuals.
(B) Obesity induces many individuals to smoke.
(C) Most snorers do not smoke.
(D) Most smokers do not snore.
(E) Both smoking and snoring cause throat problems.

Source: LSAT

Again its between A and D
Author says smoking can induce snoring . So most smokers should be snoring if not all.
If we received evidence that such was not the case then it would certainly weaken the argument.

D directly opposes the author , it says most smokers do not snore, then smoking cannot possibly induce smoking,in this the Author is directly contradicted .
A on the other hand gives an alternate reason for both and is not as strong as D.

Please provide OE how D is wrong.
_________________

- Stne

Originally posted by stne on 09 Oct 2017, 04:06.
Last edited by stne on 10 Oct 2017, 02:50, edited 1 time in total.
CR & LSAT Forum Moderator
Status: He came. He saw. He conquered. -- Studying for the LSAT -- Corruptus in Extremis
Joined: 31 Jul 2017
Posts: 455
Location: United States
Concentration: Finance, Economics
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

09 Oct 2017, 04:22
2
stne wrote:
Again its between A and E
Author says smoking can induce snoring . So most smokers should be snoring if not all.
If we received evidence that such was not the case then it would certainly weaken the argument.

D directly opposes the author , it says most smokers do not snore, then smoking cannot possibly induce smoking,in this the Author is directly contradicted .
A on the other hand gives an alternate reason for both and is not as strong as D.

Please can you provide OE how D is wrong.

Hi stne,

Let's analyze the question:

Here is the fist line of the question: "A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers" -- D does not weaken this. D says that most people most smokers do not snore. But how does it compare non-smokers and snoring? It doesn't. This doesn't weaken our conclusion, it just gives a relative figure to it. Further, the argument's conclusion is that snoring can be induced by smoking ALONE. How does this statement weaken that point? It doesn't, once more. A gives an alternate cause, as you pointed out, so it directly refutes the conclusion.

I think you became confused with the premise and the conclusion.

Does this help?
_________________

D-Day: November 18th, 2017

Need a laugh and a break? Go here: https://gmatclub.com/forum/mental-break-funny-videos-270269.html

Need a CR tutor? PM me!

GMAT Club Verbal Expert
Joined: 20 Nov 2016
Posts: 260
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

09 Oct 2017, 17:21
stne wrote:
Again its between A and E
Author says smoking can induce snoring . So most smokers should be snoring if not all.
If we received evidence that such was not the case then it would certainly weaken the argument.

D directly opposes the author , it says most smokers do not snore, then smoking cannot possibly induce smoking,in this the Author is directly contradicted .
A on the other hand gives an alternate reason for both and is not as strong as D.

Please can you provide OE how D is wrong.

Hi stne,

Let's analyze the question:

Here is the fist line of the question: "A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers" -- D does not weaken this. D says that most people most smokers do not snore. But how does it compare non-smokers and snoring? It doesn't. This doesn't weaken our conclusion, it just gives a relative figure to it. Further, the argument's conclusion is that snoring can be induced by smoking ALONE. How does this statement weaken that point? It doesn't, once more. A gives an alternate cause, as you pointed out, so it directly refutes the conclusion.

I think you became confused with the premise and the conclusion.

Does this help?

Remember that you can always use the request verbal experts' reply button to post additional questions.
_________________
Director
Joined: 27 May 2012
Posts: 671
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

10 Oct 2017, 02:54
stne wrote:
Again its between A and E
Author says smoking can induce snoring . So most smokers should be snoring if not all.
If we received evidence that such was not the case then it would certainly weaken the argument.

D directly opposes the author , it says most smokers do not snore, then smoking cannot possibly induce smoking,in this the Author is directly contradicted .
A on the other hand gives an alternate reason for both and is not as strong as D.

Please can you provide OE how D is wrong.

Hi stne,

Let's analyze the question:

Here is the fist line of the question: "A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers" -- D does not weaken this. D says that most people most smokers do not snore. But how does it compare non-smokers and snoring? It doesn't. This doesn't weaken our conclusion, it just gives a relative figure to it. Further, the argument's conclusion is that snoring can be induced by smoking ALONE. How does this statement weaken that point? It doesn't, once more. A gives an alternate cause, as you pointed out, so it directly refutes the conclusion.

I think you became confused with the premise and the conclusion.

Does this help?

_________________

- Stne

BSchool Forum Moderator
Joined: 28 Mar 2017
Posts: 1219
Location: India
GMAT 1: 730 Q49 V41
GPA: 4
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

10 Oct 2017, 19:51
1
A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers. On the basis of this evidence, the author hypothesized that smoking by itself can induce snoring.

Which one of the following, if true, casts the most doubt on the author’s hypothesis?

(A) Stress induces both snoring and smoking in certain individuals. -Correct. From the premise we know that "most" smokers/non-smokers don't snore. So among the remaining few people stress induces both smoking and snoring habit.
(B) Obesity induces many individuals to smoke. -Out of scope. The argument is about snore and not smoke.
(C) Most snorers do not smoke. -We already know this from the premise. This is just restatement of the aforesaid fact.
(D) Most smokers do not snore. -We already know this from the premise. This is just restatement of the aforesaid fact.
(E) Both smoking and snoring cause throat problems. -Out of scope. The argument is about snore and not smoke.
_________________
Intern
Joined: 03 Dec 2016
Posts: 31
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

12 Oct 2017, 01:12
Hi,

I have gone through the explanations in the thread below, but still fail to understand the logic:

Option A: "Stress induces both snoring and smoking in certain individuals". Though this option provides a new source that induces snoring apart from smoking, but it does not say anything about people without stress but who smoke. What about these people do they snore or not?

Option D: "Most smokers do not sore". This directly deals with the conclusion. It presents a fact that is exactly opposite of the conclusion. Most smokers do not snore and hence smoking has not induced snoring in many people

Hence, shouldn't the answer be option D?

Thanks!
GMAT Club Verbal Expert
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2253
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

19 Oct 2017, 20:25
Novice90 wrote:
Hi,

I have gone through the explanations in the thread below, but still fail to understand the logic:

Option A: "Stress induces both snoring and smoking in certain individuals". Though this option provides a new source that induces snoring apart from smoking, but it does not say anything about people without stress but who smoke. What about these people do they snore or not?

Option D: "Most smokers do not sore". This directly deals with the conclusion. It presents a fact that is exactly opposite of the conclusion. Most smokers do not snore and hence smoking has not induced snoring in many people

Hence, shouldn't the answer be option D?

Thanks!

Yes, there are still smokers whose snoring cannot be blamed on stress, and without further information, we cannot say whether choice (A) actually disproves the author's hypothesis. However, it certainly weakens the author's reasoning. The author reasons that since snoring is more common among smokers, smoking by itself must be causing some people to snore. Choice (A) tells us that at least some of the smokers who snore are snoring because of stress not because they smoke. Perhaps if stress were not a factor, smokers and nonsmokers would be equally likely to snore. But because stress induces smoking AND snoring, the data, on which the hypothesis is based, is misleading.

As for choice (D), the conclusion is that smoking by itself can induce snoring. This does not say that smoking always or even usually induces snoring. Rather, it says that smoking, by itself, can induce snoring. The author's hypothesis does not require that most smokers snore. In fact, the passage even states that snoring is not common among smokers. This fact does not impact the author's reasoning, so choice (D) can be eliminated. As long as some smokers snore, the author's hypothesis is feasible.
_________________

GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | Instagram | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for \$29.99 | Time management on verbal

Verbal Forum Moderator
Status: Greatness begins beyond your comfort zone
Joined: 08 Dec 2013
Posts: 2187
Location: India
Concentration: General Management, Strategy
Schools: Kelley '20, ISB '19
GPA: 3.2
WE: Information Technology (Consulting)
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

12 Dec 2017, 23:51
broall wrote:
A recent study found that snoring, though not common in either group, is more common among smokers than among nonsmokers. On the basis of this evidence, the author hypothesized that smoking by itself can induce snoring.

Which one of the following, if true, casts the most doubt on the author’s hypothesis?

(A) Stress induces both snoring and smoking in certain individuals.
(B) Obesity induces many individuals to smoke.
(C) Most snorers do not smoke.
(D) Most smokers do not snore.
(E) Both smoking and snoring cause throat problems.

Source: LSAT

PREMISES
Snoring not common among smokers or non-smokers
Snoring more common among smokers.
CONCLUSION
Smoking by itself can induce snoring.
This is a classic causation/correlation mistake. We know A is correlated with B, and the author assumes A therefore must cause B. Classic rebuttals to this are:
1) reverse causation: B might cause A
2) third party: C might cause both A and B
3) coincidence!

(A) nails the target by introducing a third party, stress, that could be responsible for causing both snoring and smoking, which would handily explain the correlation.

Not the Problem
(B) This doesn't explain the connection to snoring.
(C) The conclusion was only that smoking could induce snoring, not that it was the only possible way to induce snoring. If most snorers don't smoke, then their snoring is caused by something other than smoking, but that's okay - it doesn't damage the conclusion.
(D) We were already told this in the premise!
(E) Who cares what smoking and snoring cause, we want to know what causes THEM!
_________________

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long
+1 Kudos if you find this post helpful

Intern
Joined: 02 Dec 2018
Posts: 37
Location: India
Re: A recent study found that snoring, though not common  [#permalink]

### Show Tags

15 Dec 2018, 02:06
Option D is contradicting the fact by saying MOST (more than 50%) smokers do not snore. Smokers + Not snoring > Non Smokers + Not snoring
But author has stated the fact that snoring is more common in smokers. ie Smokers + Snoring > Non smoker + Snoring

Therefore D is wrong.

Whereas A is saying something else causes snoring and smoking.
Which is a type of weakening.

KUDOS
Thanks.
Re: A recent study found that snoring, though not common &nbs [#permalink] 15 Dec 2018, 02:06
Display posts from previous: Sort by