A newly discovered disease is thought to be caused by a : GMAT Critical Reasoning (CR)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 17 Jan 2017, 12:05

### 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

# A newly discovered disease is thought to be caused by a

Author Message
TAGS:

### Hide Tags

Senior Manager
Status: D-Day is on February 10th. and I am not stressed
Affiliations: American Management association, American Association of financial accountants
Joined: 12 Apr 2011
Posts: 270
Location: Kuwait
Schools: Columbia university
Followers: 5

Kudos [?]: 272 [0], given: 52

A newly discovered disease is thought to be caused by a [#permalink]

### Show Tags

18 Jan 2012, 10:09
5
This post was
BOOKMARKED
00:00

Difficulty:

75% (hard)

Question Stats:

49% (02:09) correct 51% (01:39) wrong based on 113 sessions

### HideShow timer Statistics

A newly discovered disease is thought to be caused by a certain bacterium. However, recently released data notes that the bacterium thrives in the presence of a certain virus, implying that it is actually the virus that causes the new disease.

Which of the following pieces of evidence would most support the data’s implication?

(A) In the absence of the virus, the disease has been observed to follow infection by the bacterium.
(B) The virus has been shown to aid the growth of bacterium, a process which often leads to the onset of the disease.
(C) The virus alone has been observed in many cases of the disease.
(D) In cases where the disease does not develop, infection by the bacterium is usually preceded by infection by the virus.
(E) Onset of the disease usually follows infection by both the virus and the bacterium.

[Reveal] Spoiler:
question: according to CR bible, to support a causal argument, u need to
1- eliminate possible causes
2- show when A happens, B happens
3- when A doesnt happen, B doesn't happen
4- show that the relationship is not reversed
5--6--7 etc.
in this case I chose B, which confirmed that A caused B, when A happens B happens. I am not sure why its wrong. I am so upset
[Reveal] Spoiler: OA

_________________

Sky is the limit

Last edited by Narenn on 31 Oct 2013, 11:40, edited 1 time in total.
Necessary corrections for 'Bumping for review' project
If you have any questions
New!
Manager
Joined: 09 Nov 2011
Posts: 129
Followers: 1

Kudos [?]: 54 [0], given: 16

Re: A newly discovered disease is thought [#permalink]

### Show Tags

18 Jan 2012, 13:25
The conclusion as given in the last statement is - Virus causes the disease and not the bacterium.
Option C supports this conclusion by highlighting that in many cases, even in the absence of the bacteria, the disease can be caused only by the virus.

This is not a Causal argument. Infact the conclusion negates the cause and anything that harms the causal relationship will strengthen the overall argument.
_________________

Time to play the game...

Magoosh GMAT Instructor
Joined: 28 Nov 2011
Posts: 307
Followers: 521

Kudos [?]: 983 [1] , given: 2

Re: A newly discovered disease is thought [#permalink]

### Show Tags

18 Jan 2012, 14:32
1
KUDOS
Expert's post
1
This post was
BOOKMARKED
This is a tricky question - it is LSAT after all.

Let's take a look at (B). It says that the virus causes the bacteria to grow, a process followed by the onset of the disease. So this is not a simple cae of A causes B. Instead A (the virus) causes B (the bacteria) and then C (the disease) is observed.

We want an answer choice in which only A (the virus) appears with B (the disease).

(C) states that the virus alone has been observed by the disease. Without the presence of the bacterium confounding the causal chain, (C) provides the strongest support that the virus causes the disease.

Hope that helps
_________________

Christopher Lele
Magoosh Test Prep

Director
Status: Enjoying the GMAT journey....
Joined: 26 Aug 2011
Posts: 735
Location: India
GMAT 1: 620 Q49 V24
Followers: 72

Kudos [?]: 504 [0], given: 264

Re: A newly discovered disease is thought [#permalink]

### Show Tags

18 Jan 2012, 23:39
+ 1 C.
C is clearly supporting the conclusion.
B and the sentence "recently released data notes that the bacterium thrives in the presence of a certain virus" are same , thus B is merely reinstating the premise...
_________________

Fire the final bullet only when you are constantly hitting the Bull's eye, till then KEEP PRACTICING.

A WAY TO INCREASE FROM QUANT 35-40 TO 47 : http://gmatclub.com/forum/a-way-to-increase-from-q35-40-to-q-138750.html

Q 47/48 To Q 50 + http://gmatclub.com/forum/the-final-climb-quest-for-q-50-from-q47-129441.html#p1064367

Three good RC strategies http://gmatclub.com/forum/three-different-strategies-for-attacking-rc-127287.html

Manager
Status: I will be back!
Joined: 13 Feb 2012
Posts: 69
Location: India
Followers: 0

Kudos [?]: 54 [0], given: 38

Re: A newly discovered disease is thought [#permalink]

### Show Tags

23 Mar 2012, 22:03
it is clear from ChrisLele explanation.
_________________

Gmat FlashCard For Anki

GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10528
Followers: 918

Kudos [?]: 203 [0], given: 0

Re: A newly discovered disease is thought to be caused by a [#permalink]

### Show Tags

25 May 2016, 04:44
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Re: A newly discovered disease is thought to be caused by a   [#permalink] 25 May 2016, 04:44
Similar topics Replies Last post
Similar
Topics:
6 A newly discovered disease is thought to be caused by a certain bact 7 23 Feb 2016, 08:50
18 A newly discovered painting seems to be the work of 14 14 Jul 2015, 09:38
A newly discovered disease is thought to be caused by a 2 02 Sep 2011, 08:21
3 A newly discovered disease is thought to be caused by a 25 23 Apr 2010, 14:50
A newly discovered painting on wooden panel by Michelangelo 0 18 Jan 2008, 10:40
Display posts from previous: Sort by