It is currently 29 Mar 2017, 20:50
My Tests

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.

QOTD #2 Bedbug infestations have been a problem

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Moderator
Moderator
User avatar
Joined: 18 Apr 2015
Posts: 1273
Followers: 18

Kudos [?]: 139 [0], given: 716

QOTD #2 Bedbug infestations have been a problem [#permalink] New post 06 May 2016, 00:50
Expert's post
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Bedbug infestations have been a problem in major cities for years. The pesticide DDT has been found to be useful in killing bedbugs. However, DDT was banned in the United States and has been replaced by weaker pesticides. Thus, there is no effective means for eradicating bedbugs in the United States.

Which of the following, if true, most weakens the conclusion?

(A) Bedbugs resemble other small insects in their appearance and behavior.

(B) Bedbugs have largely been eradicated in other parts of the world.

(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.

(D) Bedbugs are resistant to the types of pesticides used to treat cockroach and ant infestations.

(E) The number of bedbug infestations has risen significantly in the 21st century.
[Reveal] Spoiler: OA

_________________

Get the 17 FREE GREPrepclub Tests

1 KUDOS received
Manager
Manager
Joined: 23 Jan 2016
Posts: 139
Followers: 2

Kudos [?]: 79 [1] , given: 15

Re: QOTD - Bedbug infestations have been a problem in major citi [#permalink] New post 15 May 2016, 19:19
1
This post received
KUDOS
The argument assumes DDT to be the only treatment. Answer Choice C by suggesting alternative treatments weakens the argument.
Moderator
Moderator
User avatar
Joined: 18 Apr 2015
Posts: 1273
Followers: 18

Kudos [?]: 139 [0], given: 716

Re: QOTD - Bedbug infestations have been a problem in major citi [#permalink] New post 16 May 2016, 00:11
Expert's post
OE

Quote:
This is a Logic question that asks you to weaken an argument. The author cites a problem: a pesticide that is effective in killing bedbugs is no longer available for use. Thus, the author claims, there is no effective means to kill the bedbugs in the United States. The problem here is that the author makes a very large jump between “replaced by weaker pesticides” and “there is no effective means.” Finding something that attacks this assumption would be a good way to weaken the argument. Regarding choice (A), the behaviors of bedbugs have nothing to do with the ability to eradicate them. Choice (B) does not specify how bedbugs were eradicated in other parts of the world. It is possible that all successful eradications elsewhere relied on DDT. Correct choice (C) opens up the possibility that there might be an approved means to eradicate the dreaded bedbug in the United States. It also calls the author’s conclusion about there being “no effective means for eradicating bedbugs in the United States” into question. Choice (D), though largely out of scope, might be viewed as strengthening the author’s conclusion, as it points to more evidence that existing pesticides are not effective on bedbugs. However, eliminating one possibility is not the same as eliminating all possibilities, which is what the author does in the conclusion. As for choice (E), the number of infestations has nothing to do with the ability to eliminate bedbugs in the United States.

_________________

Get the 17 FREE GREPrepclub Tests

Re: QOTD - Bedbug infestations have been a problem in major citi   [#permalink] 16 May 2016, 00:11
Display posts from previous: Sort by

QOTD #2 Bedbug infestations have been a problem

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GRE Prep Club Forum Home| About| Privacy Policy| Terms and Conditions| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.