Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 06 May 2016, 10:24

### 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

# Nuclear reactors are sometimes built in geologically quiet

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Retired Moderator
Affiliations: PMI, ASQ
Joined: 16 Jun 2012
Posts: 118
GMAT 1: 710 Q49 V38
Followers: 174

Kudos [?]: 1018 [5] , given: 21

Nuclear reactors are sometimes built in geologically quiet [#permalink]

### Show Tags

05 Feb 2013, 21:19
5
KUDOS
8
This post was
BOOKMARKED
00:00

Difficulty:

95% (hard)

Question Stats:

35% (03:16) correct 65% (02:18) wrong based on 532 sessions

### HideShow timer Statictics

Nuclear reactors are sometimes built in “geologically quiet” regions, so called by geologists because such regions are distant from plate boundaries and contain only minor faults. Since no minor fault in a geologically quiet region produces an earthquake more often than once in any given 100,000-year period, it follows that of all potential nuclear reactor sites in such a region, those that are least likely to be struck by an earthquake are ones located near a fault that has produced an earthquake within living memory.
Which one of the following is an assumption on which the argument depends?
(A) Geologically quiet regions are the least dangerous regions in which to build nuclear reactors.
(B) For any potential nuclear reactor site, the likelihood of being struck by an earthquake is the primary determinant of site safety.
(C) In a geologically quiet region, every potential nuclear reactor site is near at least one minor fault.
(D) Nuclear reactors that are located in geologically quiet regions are built to withstand at least one but not necessarily more than one earthquake of minor to moderate force.
(E) Earthquake faults in geologically quiet regions produce earthquakes at least once in 100,000 years.
[Reveal] Spoiler: OA

_________________

Legendary Collections
1. 700 Level Quant 2. IIM Quant 3. 100 CR from LSAT 4. 100 Legendary SC 5. 5000 Practice problems 6.125 Quant 7. 38 SC 8. 10 Full Length GMAT Pen&Paper Tests
9. 1500+ RC 10. 100 Legendary CR 11. Additional Verbal Qs 12. Additional Quant Qs

My debrief |Free essay review initiative
PM me for One-on-One Webex Tutoring

Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 6493
Location: Pune, India
Followers: 1763

Kudos [?]: 10522 [7] , given: 207

Re: Nuclear reactors are sometimes built in “geologically quiet” [#permalink]

### Show Tags

07 Feb 2013, 21:27
7
KUDOS
Expert's post
1
This post was
BOOKMARKED
Nuclear reactors are sometimes built in “geologically quiet” regions, so called by geologists because such regions are distant from plate boundaries and contain only minor faults. Since no minor fault in a geologically quiet region produces an earthquake more often than once in any given 100,000-year period, it follows that of all potential nuclear reactor sites in such a region, those that are least likely to be struck by an earthquake are ones located near a fault that has produced an earthquake within living memory.
Which one of the following is an assumption on which the argument depends?
(A) Geologically quiet regions are the least dangerous regions in which to build nuclear reactors.
(B) For any potential nuclear reactor site, the likelihood of being struck by an earthquake is the primary determinant of site safety.
(C) In a geologically quiet region, every potential nuclear reactor site is near at least one minor fault.
(D) Nuclear reactors that are located in geologically quiet regions are built to withstand at least one but not necessarily more than one earthquake of minor to moderate force.
(E) Earthquake faults in geologically quiet regions produce earthquakes at least once in 100,000 years.

I understand when people crib about RC and SC. But the truth is that CR is not hard to rule. All you need is some patience and correct guidance.
You need to find the assumption here. An assumption is a missing premise that is necessary for the conclusion to hold - again, it is necessary for the conclusion. Look for the conclusion of the argument.

Conclusion: Of all potential nuclear reactor sites in such a region, those that are least likely to be struck by an earthquake are ones located near a fault that has produced an earthquake within living memory

Go on to the options now:

(A) Geologically quiet regions are the least dangerous regions in which to build nuclear reactors.
The conclusion categorically states: "Of all potential sites in such a region" i.e. it is only considering quiet regions. It is not comparing geologically quiet regions with other regions so this option is out of scope.

(B) For any potential nuclear reactor site, the likelihood of being struck by an earthquake is the primary determinant of site safety.
Again, the conclusion does not talk about 'site safety'. It only discusses the likelihood of an earthquake. So again out of scope.

(C) In a geologically quiet region, every potential nuclear reactor site is near at least one minor fault.
The conclusion says that of all potential sites in a quiet region, the safest (regarding earthquakes) is the one near a minor fault that has recently produced an earthquake. It does make sense in a way since a recent earthquake would have settled the plates and hence it is not very likely that another earthquake will happen anytime soon. But the question is - 'Is it necessary that there will be a minor fault near all the potential sites?' How about a site which has no faults and hence no chance of an earthquake? Hence, when we say, 'Build the plant near a minor fault which has seen an earthquake in the recent past,' we are assuming that there is no site which has no faults. We are assuming that every potential site has at least one minor fault. Answer (C)

(D) Nuclear reactors that are located in geologically quiet regions are built to withstand at least one but not necessarily more than one earthquake of minor to moderate force.
Again, it is out of scope since the conclusion does not talk about how many earthquakes the reactor can stand. It is only trying to find the site where chances of an earthquake are minimum.

(E) Earthquake faults in geologically quiet regions produce earthquakes at least once in 100,000 years.
We don't need to assume this to make the conclusion true. 1 in a 100,000 is just the average. There needn't be 1 in every 100,000 yrs. The conclusion is only trying to find the most stable area to make the reactor. A fault that has experienced an earthquake recently is expected to be more stable that a site with a minor fault which hasn't experienced an earthquake lately.
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Get started with Veritas Prep GMAT On Demand for $199 Veritas Prep Reviews GMAT Club Legend Joined: 01 Oct 2013 Posts: 7435 Followers: 701 Kudos [?]: 140 [1] , given: 0 Re: Nuclear reactors are sometimes built in geologically quiet [#permalink] ### Show Tags 10 Apr 2014, 08:58 1 This post received KUDOS 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. VP Status: Been a long time guys... Joined: 03 Feb 2011 Posts: 1420 Location: United States (NY) Concentration: Finance, Marketing GPA: 3.75 Followers: 164 Kudos [?]: 1047 [0], given: 62 Re: Nuclear reactors are sometimes built in “geologically quiet” [#permalink] ### Show Tags 05 Feb 2013, 23:35 Expert's post Legendaddy wrote: Nuclear reactors are sometimes built in “geologically quiet” regions, so called by geologists because such regions are distant from plate boundaries and contain only minor faults. Since no minor fault in a geologically quiet region produces an earthquake more often than once in any given 100,000-year period, it follows that of all potential nuclear reactor sites in such a region, those that are least likely to be struck by an earthquake are ones located near a fault that has produced an earthquake within living memory. Which one of the following is an assumption on which the argument depends? (A) Geologically quiet regions are the least dangerous regions in which to build nuclear reactors. (B) For any potential nuclear reactor site, the likelihood of being struck by an earthquake is the primary determinant of site safety. (C) In a geologically quiet region, every potential nuclear reactor site is near at least one minor fault. (D) Nuclear reactors that are located in geologically quiet regions are built to withstand at least one but not necessarily more than one earthquake of minor to moderate force. (E) Earthquake faults in geologically quiet regions produce earthquakes at least once in 100,000 years. This was good one. The conclusion is ALL potential nuclear reactor sites in such a region, those that are least likely to be struck by an earthquake are ones located near a fault that has produced an earthquake within living memory.. Here negation or POE can be one's arsenal. ABD are out of scope. E is a restatement of the premise. On negating C, C becomes: In a geologically quiet region, NOT ALL potential nuclear reactor site is near at least one minor fault. If this is true, then by no chance the conclusion can stand intact. _________________ Retired Moderator Affiliations: PMI, ASQ Joined: 16 Jun 2012 Posts: 118 GMAT 1: 710 Q49 V38 Followers: 174 Kudos [?]: 1018 [0], given: 21 Re: Nuclear reactors are sometimes built in “geologically quiet” [#permalink] ### Show Tags 06 Feb 2013, 00:32 Marcab wrote: This was good one. The conclusion is ALL potential nuclear reactor sites in such a region, those that are least likely to be struck by an earthquake are ones located near a fault that has produced an earthquake within living memory.. Here negation or POE can be one's arsenal. ABD are out of scope. E is a restatement of the premise. On negating C, C becomes: In a geologically quiet region, NOT ALL potential nuclear reactor site is near at least one minor fault. If this is true, then by no chance the conclusion can stand intact. Good job buddy. Unfortunately CR is mopping the floor with me _________________ Legendary Collections 1. 700 Level Quant 2. IIM Quant 3. 100 CR from LSAT 4. 100 Legendary SC 5. 5000 Practice problems 6.125 Quant 7. 38 SC 8. 10 Full Length GMAT Pen&Paper Tests 9. 1500+ RC 10. 100 Legendary CR 11. Additional Verbal Qs 12. Additional Quant Qs My debrief |Free essay review initiative PM me for One-on-One Webex Tutoring Intern Joined: 01 Jul 2014 Posts: 18 Concentration: Technology, General Management GMAT Date: 08-05-2014 GPA: 2.8 Followers: 0 Kudos [?]: 0 [0], given: 0 Re: Nuclear reactors are sometimes built in geologically quiet [#permalink] ### Show Tags 14 Aug 2014, 07:06 Does not assumption mean finding the unstated premise? Veritas Prep GMAT Instructor Joined: 16 Oct 2010 Posts: 6493 Location: Pune, India Followers: 1763 Kudos [?]: 10522 [0], given: 207 Re: Nuclear reactors are sometimes built in geologically quiet [#permalink] ### Show Tags 17 Aug 2014, 04:45 Expert's post peterparker123 wrote: Does not assumption mean finding the unstated premise? Yes, an assumption is an unstated missing premise. Look at the explanation given above. _________________ Karishma Veritas Prep | GMAT Instructor My Blog Get started with Veritas Prep GMAT On Demand for$199

Veritas Prep Reviews

Re: Nuclear reactors are sometimes built in geologically quiet   [#permalink] 17 Aug 2014, 04:45
Similar topics Replies Last post
Similar
Topics:
1 Although the geological record contains some hints of major 16 14 Mar 2011, 09:31
2 It is repeatedly claimed that the dumping of nuclear waste 28 06 Aug 2009, 07:05
1 CR-Nuclear Power in France 4 19 Feb 2009, 08:07
It is repeatedly claimed that the dumping of nuclear waste 8 25 Jun 2008, 11:56
Nuclear reactors are sometimes built in geologically quiet 5 03 Jun 2006, 11:29
Display posts from previous: Sort by

# Nuclear reactors are sometimes built in geologically quiet

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.