Last visit was: 19 Nov 2025, 06:57 It is currently 19 Nov 2025, 06:57
Close
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
Your Progress

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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
ykaiim
Joined: 25 Aug 2007
Last visit: 21 Aug 2012
Posts: 519
Own Kudos:
5,901
 [69]
Given Kudos: 40
WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain
Posts: 519
Kudos: 5,901
 [69]
11
Kudos
Add Kudos
57
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
fluke
User avatar
Retired Moderator
Joined: 20 Dec 2010
Last visit: 24 Oct 2013
Posts: 1,099
Own Kudos:
5,095
 [18]
Given Kudos: 376
Posts: 1,099
Kudos: 5,095
 [18]
14
Kudos
Add Kudos
4
Bookmarks
Bookmark this Post
User avatar
nverma
Joined: 24 Jul 2009
Last visit: 13 Jun 2011
Posts: 155
Own Kudos:
539
 [10]
Posts: 155
Kudos: 539
 [10]
10
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 19 Nov 2025
Posts: 105,389
Own Kudos:
Given Kudos: 99,977
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 105,389
Kudos: 778,231
Kudos
Add Kudos
Bookmarks
Bookmark this Post
ykaiim
The Ergonomic Society conducted a study that indicated that many people develop severe back problems during adulthood, and that virtually all such people who received chiropractic treatment showed great improvement. Therefore, in order to minimize the proportion of the population that suffers from back pain, the Ergonomic Society recommended that chiropractic treatment be directed toward those adults who suffer from severe back problems.

Which of the following is an assumption on which the argument depends?

(A) Any person who receives chiropractic treatment for back pain may also benefit from other forms of treatment.

(B) Large insurance carriers cover chiropractic care for back problems to a lesser degree than they do other medical treatments.

(C) Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.

(D) Chiropractic treatment is more effective in treating severe back problems when utilized over a long period of time, as opposed to sporadically.

(E) Severe back pain and other problems often cause individuals to miss workdays.

OFFICIAL EXPLANATION



The argument proposes that directing chiropractic treatment toward adults with severe back problems is the best way to minimize the proportion of the population that suffers from back pain. The argument assumes a high degree of overlap between those adults who suffer from severe back problems and all people who suffer from back pain, where the former group may comprise only a subset of the latter group. It also assumes that there is not another recommendation that could better accomplish the goal of minimizing back pain for a larger segment of the population than treating just those adults with severe back problems.

(A) The argument does not depend upon whether or not chiropractic treatment can or cannot be used in conjunction with other medical treatments. The fact that people could benefit from other forms of treatment aside from chiropractic care weakens the argument to a slight degree, and does not act as a supportive assumption.

(B) The relative degree of insurance coverage of chiropractic care compared with other medical treatments is not vital to the argument. Also, that insurance carriers cover chiropractic care to a lesser degree weakens the argument marginally, and does not act as a supportive assumption.

(C) CORRECT. This statement rules out the possibility that chiropractic care or other medical treatments could effectively prevent or lessen back pain among those people who have not yet developed severe back problems.

(D) That chiropractic treatment is more effective over time is irrelevant to the argument.

(E) The economic impact of severe back pain and other problems is not addressed in the argument. Instead, addressing back pain is treated as an intrinsic goal, with no mention of economic externalities.
General Discussion
User avatar
nverma
Joined: 24 Jul 2009
Last visit: 13 Jun 2011
Posts: 155
Own Kudos:
Posts: 155
Kudos: 539
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Simply negate the option C and you will find that the option destroys the argument...!!
It has to be C.
User avatar
einstein10
Joined: 13 Dec 2009
Last visit: 10 Jul 2012
Posts: 75
Own Kudos:
636
 [1]
Given Kudos: 10
Posts: 75
Kudos: 636
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
nverma
Simply negate the option C and you will find that the option destroys the argument...!!
It has to be C.
could you please put option C i.e. "Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not" in your wordings.. i am not able to comprehend or taking in different way.. many thanks
User avatar
adhithya
Joined: 02 Nov 2010
Last visit: 12 Apr 2021
Posts: 71
Own Kudos:
Given Kudos: 15
Location: india
Concentration: Finance,general management
WE 1: 1.3
Products:
Posts: 71
Kudos: 57
Kudos
Add Kudos
Bookmarks
Bookmark this Post
thanks a lot fluke and great way of thinking.
Just one question though,how do we interpret such a complex choice in exam(as in ,i could only prephrase this much that adults who sufer from back pain form a major proportion of people suffering from back pain)
thanks agian
User avatar
fluke
User avatar
Retired Moderator
Joined: 20 Dec 2010
Last visit: 24 Oct 2013
Posts: 1,099
Own Kudos:
5,095
 [1]
Given Kudos: 376
Posts: 1,099
Kudos: 5,095
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
adhithya
thanks a lot fluke and great way of thinking.
Just one question though,how do we interpret such a complex choice in exam(as in ,i could only prephrase this much that adults who sufer from back pain form a major proportion of people suffering from back pain)
thanks agian

Seriously, I don't consciously follow any strict rule or protocol while solving these. I suggest you to read "Powerscore CR bible". It really helped me a lot.

For this question in particular, because it is an assumption question, locating the argument is highly important AND not missing anything what's mentioned in argument is necessary. Spend 10 seconds thinking whether we really require some additional information for that conclusion. Let me tell you this; most of the time, I can't figure out just by reading the argument what a possible assumption might be. But, after looking at the options, I can eliminate 2-3 options easily.

Don't eliminate an answer choice just because it's wordy, sounds convoluted, uses unheard words. Keep it aside and proceed further to eliminate the choices with conspicuous errors and then come back to the difficult option.

But, read the CR powerscore bible.
avatar
krackgmat
Joined: 02 Oct 2010
Last visit: 23 Jan 2013
Posts: 11
Own Kudos:
88
 [5]
Given Kudos: 3
Posts: 11
Kudos: 88
 [5]
1
Kudos
Add Kudos
4
Bookmarks
Bookmark this Post
The Ergonomic Society conducted a study that indicated that many people develop severe back problems during adulthood, and that virtually all such people who received chiropractic treatment showed great improvement. Therefore, in order to minimize the proportion of the population that suffers from back pain, the Ergonomic Society recommended that chiropractic treatment be directed toward those adults who suffer from severe back problems.

Which of the following is an assumption on which the argument depends?
Any person who receives chiropractic treatment for back pain may also benefit from other forms of treatment.
Large insurance carriers cover chiropractic care for back problems to a lesser degree than they do other medical treatments.
Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.
Chiropractic treatment is more effective in treating severe back problems when utilized over a long period of time, as opposed to sporadically.
Severe back pain and other problems often cause individuals to miss workdays.

In the above answer choices, can someone apply Logical Negation to choice (C), which is the answer to the question.
My question is to know in which part of the sentence we need to apply the logical negation. In answer choice (C), we can apply logical negation at 3 places. So can someone explain where to apply.

Individuals who DO/DON'T receive chiropractic or other treatment prior to developing severe back problems are LESS LIKELY not less likely to develop back pain than those who do DOES not.

Thanks
User avatar
plumber250
Joined: 07 Nov 2012
Last visit: 21 Dec 2015
Posts: 220
Own Kudos:
960
 [2]
Given Kudos: 4
GMAT 1: 770 Q48 V48
GMAT 1: 770 Q48 V48
Posts: 220
Kudos: 960
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi Krackgmat,

Let me see if I can help..

Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.


Is answer C. It's tricky, because as you say there are lots of negatives to work out. So, before we go any further, we need to work out what it actually saying.

It is saying that people who get preventative chiropractic treatment will not fare better than people who do not receive preventative treatment.

Re phrased like that the key 'negation' is clearer (highlighted above).

And it also makes it clear that this is an assumption. Because if we put all our $$ into treating people with back problems we need to know that we could not have spent the money better by treating all people before they get pain (preventative treatment).

James
User avatar
AkshdeepS
Joined: 13 Apr 2013
Last visit: 07 Nov 2025
Posts: 1,436
Own Kudos:
Given Kudos: 1,002
Status:It's near - I can see.
Location: India
Concentration: International Business, Operations
GPA: 3.01
WE:Engineering (Real Estate)
Products:
Posts: 1,436
Kudos: 1,884
Kudos
Add Kudos
Bookmarks
Bookmark this Post
ykaiim
The Ergonomic Society conducted a study that indicated that many people develop severe back problems during adulthood, and that virtually all such people who received chiropractic treatment showed great improvement. Therefore, in order to minimize the proportion of the population that suffers from back pain, the Ergonomic Society recommended that chiropractic treatment be directed toward those adults who suffer from severe back problems.

Which of the following is an assumption on which the argument depends?

(A) Any person who receives chiropractic treatment for back pain may also benefit from other forms of treatment.

(B) Large insurance carriers cover chiropractic care for back problems to a lesser degree than they do other medical treatments.

(C) Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.

(D) Chiropractic treatment is more effective in treating severe back problems when utilized over a long period of time, as opposed to sporadically.

(E) Severe back pain and other problems often cause individuals to miss workdays.

Use of POE will help here:

Conclusion : Therefore, chiropractic treatment be directed toward those adults who suffer from severe back problems.

(A) Any person who receives chiropractic treatment for back pain may also benefit from other forms of treatment. Other treatments (Irrelevant)

(B) Large insurance carriers cover chiropractic care for back problems to a lesser degree than they do other medical treatments. Irrelevant.

(C) Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.

(D) Chiropractic treatment is more effective in treating severe back problems when utilized over a long period of time, as opposed to sporadically. Not mentioned anywhere. Irrelevant

(E) Severe back pain and other problems often cause individuals to miss workdays.[/quote] Out of scope.

Only (C) left.
User avatar
reynaldreni
Joined: 07 May 2015
Last visit: 02 Nov 2022
Posts: 76
Own Kudos:
Given Kudos: 152
Location: India
Schools: Darden '21
GPA: 4
Schools: Darden '21
Posts: 76
Kudos: 142
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Why is C correct?
Negation of C does not affect the argument.
I feel C is irrelevant. Please advise.
User avatar
MartyTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 24 Nov 2014
Last visit: 11 Aug 2023
Posts: 3,476
Own Kudos:
5,579
 [1]
Given Kudos: 1,430
Status:Chief Curriculum and Content Architect
Affiliations: Target Test Prep
GMAT 1: 800 Q51 V51
Expert
Expert reply
GMAT 1: 800 Q51 V51
Posts: 3,476
Kudos: 5,579
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
reynaldreni
Why is C correct?
Negation of C does not affect the argument.
I feel C is irrelevant. Please advise.
(C) works if you read the passage as saying that the conclusion is that chiropractic treatment should be directed toward those adults who suffer from severe back problems, and not at adults who do not suffer from back problems.

That that is the conclusion is not entirely clear, and that conclusion is not clearly supported by what the passage says, but, anyway, if you read the conclusion that way, (C) works.
User avatar
anshul0130
Joined: 11 Oct 2020
Last visit: 26 Jan 2023
Posts: 49
Own Kudos:
Given Kudos: 22
Posts: 49
Kudos: 1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
KarishmaB - Can you please explain why option C is right and how negation of option C weakens the conclusion?

Thanks,
Anshul
User avatar
KarishmaB
Joined: 16 Oct 2010
Last visit: 18 Nov 2025
Posts: 16,267
Own Kudos:
76,994
 [3]
Given Kudos: 482
Location: Pune, India
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 16,267
Kudos: 76,994
 [3]
3
Kudos
Add Kudos
Bookmarks
Bookmark this Post
ykaiim
The Ergonomic Society conducted a study that indicated that many people develop severe back problems during adulthood, and that virtually all such people who received chiropractic treatment showed great improvement. Therefore, in order to minimize the proportion of the population that suffers from back pain, the Ergonomic Society recommended that chiropractic treatment be directed toward those adults who suffer from severe back problems.

Which of the following is an assumption on which the argument depends?

(A) Any person who receives chiropractic treatment for back pain may also benefit from other forms of treatment.

(B) Large insurance carriers cover chiropractic care for back problems to a lesser degree than they do other medical treatments.

(C) Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.

(D) Chiropractic treatment is more effective in treating severe back problems when utilized over a long period of time, as opposed to sporadically.

(E) Severe back pain and other problems often cause individuals to miss workdays.


Context: Many people develop severe back problems during adulthood, and virtually all such people who received chiropractic treatment showed great improvement
Plan: Chiropractic treatment be directed toward those adults who suffer from severe back problems
Aim: minimize the proportion of the population that suffers from back pain


Our aim is to minimize the proportion of the population that suffers from back pain. We plan to direct chiropractic treatment toward people with severe back problems. But what if directing chiropractic treatment toward other adults will prevent back problems in the first place. Our plan is to focus on treatment of severe back pain. What if prevention will lead to minimising the population that suffers from back pain?

When we conclude that we should direct chiropractic treatment to people with back problems to minimise the proportion of people with back problems, we are assuming that chiropractic treatment will not have much use as a preventive strategy.

(C) Individuals who receive chiropractic or other treatment prior to developing severe back problems are not less likely to develop back pain than those who do not.

Negated (C): Individuals who receive chiropractic or other treatment prior to developing severe back problems are less likely to develop back pain than those who do not.

If people given chiropractic treatment before developing severe back problems are less likely to develop back pain in the first place, it is possible that 'to minimize the proportion of the population that suffers from back pain,' the best idea may not be to direct these treatments to treat back pain but instead to treat everyone.
Hence, (C) is an assumption.
User avatar
SudhanshuC
Joined: 11 Nov 2024
Last visit: 03 Dec 2024
Posts: 44
Own Kudos:
Location: Canada
GMAT Focus 1: 595 Q82 V77 DI80
GMAT Focus 1: 595 Q82 V77 DI80
Posts: 44
Kudos: 7
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Option C

The argument clearly states that (as conclusion) that “chiropractic treatment be directed toward those adults who suffer from severe back problems”.

This implies that “current suffering from back pain” is a prerequisite for this argument’s conclusion.
It means that chiropractic treatment doesn’t prevent the back pain; but once back pain occurs, the treatment cures it.

Why option-C is correct

Let us assume there are 2 individuals who have had no back pain history until now. One of them has taken chiropractic treatment in the past and the other has not.

As per option C, both individuals have equal chances of developing the back pain in future because chiropractic treatment doesn’t prevent the back pain from occurring, it only cures the back pain once the back pain starts.

Negate option-C to see its correctness

Adults who received prior treatment have less chance of developing back pain in future compared to those who have not received any treatment yet.
If the above is true, then treatment should be given only to those who have not yet received the treatment.

It implies that (like the polio vaccination campaign) to prevent back pain in the future, every adult in the population should be given the treatment, provided they have not yet received the treatment.

So, the conclusion to provide the treatment to those adults who have back pain is NEVER required (because no one will have back pain from now on).

This destroys the conclusion which states that adults who have back pain require this treatment.

Hence, this is the correct answer option.
Moderators:
GMAT Club Verbal Expert
7443 posts
GMAT Club Verbal Expert
231 posts
188 posts