Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2601:30 AM EDT
-02:30 AM EDT
Learn how Keshav, a Chartered Accountant, scored an impressive 705 on GMAT in just 30 days with GMATWhiz's expert guidance. In this video, he shares preparation tips and strategies that worked for him, including the mock, time management, and more.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2512:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
May 0111:00 AM PDT
-12:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
souvik101990
Expert
Alum
Joined: 19 Mar 2012
Last visit: 11 Nov 2025
Posts: 4,314
Given Kudos: 2,326
Location: United States (WA)
Concentration: Leadership, General Management
Schools: Ross '20 (M)
GMAT 1: 760 Q50 V42
GMAT 2: 740 Q49 V42 (Online)
GMAT 3: 760 Q50 V42 (Online)
GPA: 3.8
WE:Marketing (Non-Profit and Government)
Products:
Expert reply
13 Feb 2018, 10:42
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
70% (01:47) correct
30%
(01:45)
wrong
based on 47
sessions
History
Date
Time
Result
Not Attempted Yet
Aldolase is a protein found in the brain. In an experiment, subjects who consistently chose sweetened drinks when offered a choice between salty and sweetened drinks were found, on average, to have significantly higher concentrations of Aldolase in their brains than subjects who consistently chose salty drinks over sweetened drinks. Thus, an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks. Which one of the following, if true, most supports the argument?
A. Craving sweetened drinks does not invariably result in a subject’s choosing those drinks over salty drinks.
B. The brains of the subjects who consistently chose to drink sweetened drinks did not contain significantly more sugar than the brains of subjects that consistently chose salty drinks.
C. The chemical components of Aldolase are present in sweetened drinks.
D. The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains before they were offered sweetened drinks.
E. In a study of subjects who drank one sweetened drink per day for an entire year, the concentrations of Aldolase in the brains of most subjects gradually increased over the course of the year.
A. Craving sweetened drinks does not invariably result in a subject’s choosing those drinks over salty drinks.
B. The brains of the subjects who consistently chose to drink sweetened drinks did not contain significantly more sugar than the brains of subjects that consistently chose salty drinks.
C. The chemical components of Aldolase are present in sweetened drinks.
D. The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains before they were offered sweetened drinks.
E. In a study of subjects who drank one sweetened drink per day for an entire year, the concentrations of Aldolase in the brains of most subjects gradually increased over the course of the year.
souvik101990
Expert
Alum
Joined: 19 Mar 2012
Last visit: 11 Nov 2025
Posts: 4,314
Given Kudos: 2,326
Location: United States (WA)
Concentration: Leadership, General Management
Schools: Ross '20 (M)
GMAT 1: 760 Q50 V42
GMAT 2: 740 Q49 V42 (Online)
GMAT 3: 760 Q50 V42 (Online)
GPA: 3.8
WE:Marketing (Non-Profit and Government)
Products:
Expert reply
13 Feb 2018, 10:42
Kudos
Bookmarks
Official Solution:
Aldolase is a protein found in the brain. In an experiment, subjects who consistently chose sweetened drinks when offered a choice between salty and sweetened drinks were found, on average, to have significantly higher concentrations of Aldolase in their brains than subjects who consistently chose salty drinks over sweetened drinks. Thus, an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks. Which one of the following, if true, most supports the argument?
A. Craving sweetened drinks does not invariably result in a subject’s choosing those drinks over salty drinks.
B. The brains of the subjects who consistently chose to drink sweetened drinks did not contain significantly more sugar than the brains of subjects that consistently chose salty drinks.
C. The chemical components of Aldolase are present in sweetened drinks.
D. The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains before they were offered sweetened drinks.
E. In a study of subjects who drank one sweetened drink per day for an entire year, the concentrations of Aldolase in the brains of most subjects gradually increased over the course of the year.
This is a classic correlation vs. causation CR question.
And as always, I like to start with a nice, clear restatement of the conclusion: Thus, an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks.
This is strong, clear causal language: Aldolase causes the increase in cravings for sweetened drinks. And what's the reasoning given in the passage itself? Really, it's just one sentence that leads to the conclusion:In an experiment, subjects who consistently chose sweetened drinks when offered a choice between salty and sweetened drinks were found, on average, to have significantly higher concentrations of Aldolase in their brains than subjects who consistently chose salty drinks over sweetened drinks.The author assumes that Aldolase is the cause of the cravings for sweetened drinks, but as is often the case in correlation vs. causation questions, we might wonder if the direction of causality could also be reversed.
The author says that Aldolase causes the cravings, but why couldn't the consumption of sweetened drinks lead to higher concentrations of Aldolase in the brain instead? The question is just asking us to strengthen the conclusion ("an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks.") One way to strengthen the conclusion might be to eliminate the possibility of a "causal reversal": that the sweetened drinks cause the increase in Aldolase in the brain, instead of Aldolase causing an increase in cravings for sweetened drinks. Also notice that we do not need a statement that PROVES that the conclusion is true; rather, we need a statement that SUPPORTS the argument.
(A) Craving sweetened drinks does not invariably result in a subject’s choosing those drinks over salty drinks.
Statement (A) is tempting at first! At first glance, it seems it seems to eliminate the "causal reversal" we discussed above. The trouble is, (A) only addresses the link between craving sweetened drinks and choosing those drinks; it does nothing to link Aldolase to the cravings or the consumption of sweetened drinks. And as we'll see in a moment,
(D) is a much stronger answer.
(B) The brains of the subjects who consistently chose to drink sweetened drinks did not contain significantly more sugar than the brains of subjects that consistently chose salty drinks.The argument discusses the concentration of Aldolase in the brains of subjects, but the amount of sugar in subjects' brains is irrelevant to the argument. We can eliminate (B).
(C) The chemical components of Aldolase are present in sweetened drinks.The argument claims that Aldolase in the brain causes subjects to crave sweetened drinks. Whether Aldolase is present in the drinks themselves is irrelevant to the argument. And even if we (improperly!) assume that drinking "the chemical components of Aldolase" leads to increased Aldolase in the brain, then this would work against the argument, since it would suggest that drinking sweetened drinks causes higher levels of Aldolase in the brain. Either way, (C) is gone.
(D) The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains before they were offered sweetened drinks.The answer strengthens the argument by eliminating the possibility that the stated causal relationship is reversed: if the subjects had higher concentrations of Aldolase prior to taking the sweetened drinks, then the sweetened drinks cannot be the cause of the higher concentration of Aldolase. This does not PROVE that the conclusion is true, but it certainly supports the argument.
(E) In a study of subjects who drank one sweetened drink per day for an entire year, the concentrations of Aldolase in the brains of most subjects gradually increased over the course of the year.(E) hurts the argument by suggesting that the causal relationship in the conclusion is reversed: if (E) is true, then drinking sweetened drinks would increase Aldolase levels in the brain, instead of the other way around.So (D) is our answer.
Answer: D
Aldolase is a protein found in the brain. In an experiment, subjects who consistently chose sweetened drinks when offered a choice between salty and sweetened drinks were found, on average, to have significantly higher concentrations of Aldolase in their brains than subjects who consistently chose salty drinks over sweetened drinks. Thus, an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks. Which one of the following, if true, most supports the argument?
A. Craving sweetened drinks does not invariably result in a subject’s choosing those drinks over salty drinks.
B. The brains of the subjects who consistently chose to drink sweetened drinks did not contain significantly more sugar than the brains of subjects that consistently chose salty drinks.
C. The chemical components of Aldolase are present in sweetened drinks.
D. The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains before they were offered sweetened drinks.
E. In a study of subjects who drank one sweetened drink per day for an entire year, the concentrations of Aldolase in the brains of most subjects gradually increased over the course of the year.
This is a classic correlation vs. causation CR question.
And as always, I like to start with a nice, clear restatement of the conclusion: Thus, an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks.
This is strong, clear causal language: Aldolase causes the increase in cravings for sweetened drinks. And what's the reasoning given in the passage itself? Really, it's just one sentence that leads to the conclusion:In an experiment, subjects who consistently chose sweetened drinks when offered a choice between salty and sweetened drinks were found, on average, to have significantly higher concentrations of Aldolase in their brains than subjects who consistently chose salty drinks over sweetened drinks.The author assumes that Aldolase is the cause of the cravings for sweetened drinks, but as is often the case in correlation vs. causation questions, we might wonder if the direction of causality could also be reversed.
The author says that Aldolase causes the cravings, but why couldn't the consumption of sweetened drinks lead to higher concentrations of Aldolase in the brain instead? The question is just asking us to strengthen the conclusion ("an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks.") One way to strengthen the conclusion might be to eliminate the possibility of a "causal reversal": that the sweetened drinks cause the increase in Aldolase in the brain, instead of Aldolase causing an increase in cravings for sweetened drinks. Also notice that we do not need a statement that PROVES that the conclusion is true; rather, we need a statement that SUPPORTS the argument.
(A) Craving sweetened drinks does not invariably result in a subject’s choosing those drinks over salty drinks.
Statement (A) is tempting at first! At first glance, it seems it seems to eliminate the "causal reversal" we discussed above. The trouble is, (A) only addresses the link between craving sweetened drinks and choosing those drinks; it does nothing to link Aldolase to the cravings or the consumption of sweetened drinks. And as we'll see in a moment,
(D) is a much stronger answer.
(B) The brains of the subjects who consistently chose to drink sweetened drinks did not contain significantly more sugar than the brains of subjects that consistently chose salty drinks.The argument discusses the concentration of Aldolase in the brains of subjects, but the amount of sugar in subjects' brains is irrelevant to the argument. We can eliminate (B).
(C) The chemical components of Aldolase are present in sweetened drinks.The argument claims that Aldolase in the brain causes subjects to crave sweetened drinks. Whether Aldolase is present in the drinks themselves is irrelevant to the argument. And even if we (improperly!) assume that drinking "the chemical components of Aldolase" leads to increased Aldolase in the brain, then this would work against the argument, since it would suggest that drinking sweetened drinks causes higher levels of Aldolase in the brain. Either way, (C) is gone.
(D) The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains before they were offered sweetened drinks.The answer strengthens the argument by eliminating the possibility that the stated causal relationship is reversed: if the subjects had higher concentrations of Aldolase prior to taking the sweetened drinks, then the sweetened drinks cannot be the cause of the higher concentration of Aldolase. This does not PROVE that the conclusion is true, but it certainly supports the argument.
(E) In a study of subjects who drank one sweetened drink per day for an entire year, the concentrations of Aldolase in the brains of most subjects gradually increased over the course of the year.(E) hurts the argument by suggesting that the causal relationship in the conclusion is reversed: if (E) is true, then drinking sweetened drinks would increase Aldolase levels in the brain, instead of the other way around.So (D) is our answer.
Answer: D
09 Mar 2018, 07:26
Kudos
Bookmarks
GMATNinja GMATNinjaTwo VeritasPrepKarishma generis
Conclusion:Causal one. an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks
where cause:an increase in the level of Aldolase in the brain
effect: an increase in cravings for sweetened drinks
How does author arrive here:
Say a person X chose sweetened drink multiple times and a person Y who took salty drink multiple times,
then the level of concentrations of Aldolase is found higher in former than latter.
But first sentence of argument says: Aldolase is a protein found in brain.
How can multiple intakes of a drink / preference of one over another prompt author to arrive at such a conclusion?
Is not (D) an assumption as well?
Let me present two version of negations:
1.The subjects that preferred sweetened drinks did not have higher concentrations of Aldolase in their brains before they were offered sweetened drinks.
(How does this affect my conclusion?)
2.The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains after they were offered sweetened drinks.
I feel second version of negation reverses the causal relationship and hence is it apt to say that conclusion now is invalid?
Conclusion:Causal one. an increase in the level of Aldolase in the brain is likely to cause an increase in cravings for sweetened drinks
where cause:an increase in the level of Aldolase in the brain
effect: an increase in cravings for sweetened drinks
How does author arrive here:
Quote:
Say a person X chose sweetened drink multiple times and a person Y who took salty drink multiple times,
then the level of concentrations of Aldolase is found higher in former than latter.
But first sentence of argument says: Aldolase is a protein found in brain.
How can multiple intakes of a drink / preference of one over another prompt author to arrive at such a conclusion?
Is not (D) an assumption as well?
Let me present two version of negations:
1.The subjects that preferred sweetened drinks did not have higher concentrations of Aldolase in their brains before they were offered sweetened drinks.
(How does this affect my conclusion?)
2.The subjects that preferred sweetened drinks had higher concentrations of Aldolase in their brains after they were offered sweetened drinks.
I feel second version of negation reverses the causal relationship and hence is it apt to say that conclusion now is invalid?
