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

 It is currently 19 Jan 2019, 00:43

### 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
• ### Free GMAT Strategy Webinar

January 19, 2019

January 19, 2019

07:00 AM PST

09:00 AM PST

Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.
• ### FREE Quant Workshop by e-GMAT!

January 20, 2019

January 20, 2019

07:00 AM PST

07:00 AM PST

Get personalized insights on how to achieve your Target Quant Score.

# Drinking Roost, a children’s health drink, must be a good habit. This

Author Message
TAGS:

### Hide Tags

Retired Moderator
Status: worked for Kaplan's associates, but now on my own, free and flying
Joined: 19 Feb 2007
Posts: 4619
Location: India
WE: Education (Education)
Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

Updated on: 22 May 2018, 02:04
4
6
00:00

Difficulty:

95% (hard)

Question Stats:

41% (01:43) correct 59% (01:44) wrong based on 445 sessions

### HideShow timer Statistics

Diagnostic Verbal Test No 5 Q# 12 CR

Drinking Roost, a children’s health drink, must be a good habit. This substantially increases the stamina and IQ required by children for winning competitive cricket matches. Interviews conducted with young cricketers who drank one cup of Roost each before and after the match, confirmed that the players were feeling much fresher than those who did not take the health drink

What is the principal flaw in the above reasoning?

A. Users of Brownvita, another health also claimed the same effect after consuming one cup of Brownvita before and after the event.

B. Users of Roost did not take any other drink

C. The claim was made only by small percentage of the children’s population who drank Roost in the country.

D. The claim was mainly made by children who belonged to upper strata of people, who kept good health in spite of health drinks

E. In some countries, most commercial advertisements are meant only to motivate people into action by appealing to authority rather than to inform facts

Spoiler: :: OE
A: The prime question is whether Roost can produce the said benefits; that others also can produce the same effect does not impact the argument.

B: This is a strengthener and not a flaw

C: Inadequate sampling is a major flow since it will be easy to motivate a small set of people than a larger population.

D. Strata of society is not a critical factor; notwithstanding use of health drinks, there are plenty of children with poor health in upper class due to poor lifestyles such as lack of immunity, lack of exercise, use of junk foods etc;

E: There is no advertisement that Roost is one such false claimer. So, this is not a flaw.

_________________

you can know a lot about something but not really understand it."-- a quote
No one knows this better than a GMAT student does.
Narendran +9198845 44509

Originally posted by daagh on 04 Mar 2014, 05:08.
Last edited by Bunuel on 22 May 2018, 02:04, edited 6 times in total.
Renamed
Manager
Joined: 14 Dec 2011
Posts: 183
GPA: 3.46
WE: Information Technology (Consulting)
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

04 Mar 2014, 05:31
1
I was stuck between C & D. Finally selected D but honestly, I felt both C & D as contenders. Here, we are concerned whether Roost was indeed a good habit and the claim of the sampled students is aligned along the same lines. We need to cast a doubt on this sample.

C says that the sample is a small percentage of children population drinking Roost. Therefore casts doubt.

But at the same time, as D says the students, from upper strata, are already healthy in spite of drinking Roost. Here I felt that the sample is not representative and hence casts doubt on the claim.

Confused. Not convinced with OE honestly. Experts inputs please
Manager
Joined: 14 Dec 2011
Posts: 183
GPA: 3.46
WE: Information Technology (Consulting)
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

04 Mar 2014, 05:48
Got it why D loses to C. D is not actually weakening the claim. D says mainly students from upper strata but the sample might still have students with poor health from upper strata and drinking Roost. So it doesn't really cast doubt as C does.
Intern
Joined: 26 Jan 2014
Posts: 47
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

04 Mar 2014, 23:28
1
I vote for C. it took me a couple of seconds to decide between C and D, while A,B,E are clearly wrong.

My reason is that D has a target for upper class, and the Roost works. If we know that the Roost is for everyone from the stem, then option D is correct.
C is the right choice because this option told us that the limitation of the data, which weakened the conclusion
Intern
Joined: 26 Jan 2014
Posts: 4
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

13 Mar 2014, 17:51
I opted C. As the claim states that it must be good for health. And the option C casts doubt upon the sample space irrespective of the income strata i.e. in general the concerns are raised.
Manager
Joined: 10 Dec 2011
Posts: 89
Location: India
Concentration: Finance, Economics
GMAT Date: 09-28-2012
WE: Accounting (Manufacturing)
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

16 Mar 2014, 03:10
Chose D. Please help me eliminate C. I tel you why C is wrong. C states that 'The claim was made only by small percentage of the children’s population who drank Roost in the country.'
Now I understood from C that - 'small percentage of c's population who drank Roost' implying that out of the total population of children, only a small % drinks Roost and they were fresh. So, does not weaken.
May be you understood that - out of the c's population that drinks Roost, only a small % was fresh. Then it might weaken.

But why should not I go by my understanding and eliminate C?
Retired Moderator
Status: The best is yet to come.....
Joined: 10 Mar 2013
Posts: 497
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

10 Dec 2017, 05:15
daagh wrote:
Diagnostic Verbal Test No 5 Q# 12 CR

Drinking Roost, a children’s health drink, must be a good habit. This substantially increases the stamina and IQ required by children for winning competitive cricket matches. Interviews conducted with young cricketers who drank one cup of Roost each before and after the match, confirmed that the players were feeling much fresher than those who did not take the health drink

What is the principal flaw in the above reasoning?

A. Users of Brownvita, another health also claimed the same effect after consuming one cup of Brownvita before and after the event.
B. Users of Roost did not take any other drink
C. The claim was made only by small percentage of the children’s population who drank Roost in the country.
D. The claim was mainly made by children who belonged to upper strata of people, who kept good health in spite of health drinks
E. In some countries, most commercial advertisements are meant only to motivate people into action by appealing to authority rather than to inform facts
It is C. Because, the claim is made by young cricketers not by cricketers from all segments including adult group.

It is not D. Because, nowhere in the argument it is saying that the claim is made by the upper strata of people.
_________________

Hasan Mahmud

Intern
Joined: 20 Mar 2018
Posts: 12
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

25 Apr 2018, 12:40
Could someone please help me with option D as I am still unable to understand the true gist behind that option and why it is incorrect. If the claim was made by children, who kept good health in spite of health drinks, then we cannot conclude that drinking Roost must be a good habit. If the children are already healthy to begin with, then the conclusion falls apart. My reasoning behind option C was that even if the claim was made by a small % of the people, the conclusion can still hold that drinking roost must be a good habit. Can someone please shed a light on this? Would greatly appreciate it!
Manager
Joined: 03 Feb 2016
Posts: 68
Location: India
Concentration: Technology, Marketing
GMAT 1: 650 Q48 V32
GPA: 4
WE: Sales (Computer Software)
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

06 May 2018, 05:30
I don't agree that the argument has a sampling error.

"Interviews conducted with young cricketers who drank one cup of Roost each before and after the match, confirmed that the players were feeling much fresher than those who did not take the health drink" --> This implies a one off event, but the conclusion says that it must be a good habit.

Hence the main flaw is that the evidence really is irrelevant. A one of event cannot justify an habit [if you take a painkiller to cure pain before an ailment, does it make taking painkillers a good habit ? No]. However, under the circumstances, the best option really is C. Though sampling is not really a flaw here.

Tx.
_________________

GMAT1 650 Q48 V32.

Director
Joined: 02 Oct 2017
Posts: 735
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

21 May 2018, 22:05
daagh

Could you explain difference between choice C and D

Posted from my mobile device
_________________

Give kudos if you like the post

Manager
Joined: 14 Jun 2016
Posts: 67
Location: India
GMAT 1: 610 Q49 V21
WE: Engineering (Manufacturing)
Re: Drinking Roost, a children’s health drink, must be a good habit. This  [#permalink]

### Show Tags

22 Sep 2018, 20:59
1
push12345 wrote:
daagh

Could you explain difference between choice C and D

Posted from my mobile device

We need to find the flaw in the argument : the conclusion not actually indicates that it is applicable for the entire population who consumes the drink but rather focuses only on effects young cricketers.
Nothing is stated about effects on others who consume the drink. It may be the case that the drink has some negative effects on those who are not actually interviewed- including their experiences may change the conclusion. We need to take the holistic view and then only can conclude about the efficiency of the drink.

Choice C states " The claim was made only by small percentage of the children’s population who drank Roost in the country" and points out the limitation of the argument properly.

On the other hand choice D states "The claim was mainly made by children who belonged to upper strata of people, who kept good health in spite of health drinks"

It does not indicate who drank the health drink-if it is consumed by only upper class children the representative group is only them, not the others.
Additionally the wording in the last part is also ambiguous: in spite of health drinks children kept good health ! So is it the case that the drink was not beneficial at all and they needed to take something else to improve efficiency?

Choice C is much clearer and points to the flaw directly. Hence C is correct.
_________________

If you appreciate my post then please click +1Kudos

Re: Drinking Roost, a children’s health drink, must be a good habit. This &nbs [#permalink] 22 Sep 2018, 20:59
Display posts from previous: Sort by