GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Aug 2018, 02:06

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

QOTD:Commemorative plaques cast from brass are a

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

Hide Tags

MBA Section Director
User avatar
V
Joined: 19 Mar 2012
Posts: 5121
Location: India
GMAT 1: 760 Q50 V42
GPA: 3.8
WE: Marketing (Non-Profit and Government)
QOTD:Commemorative plaques cast from brass are a  [#permalink]

Show Tags

New post 09 May 2018, 22:47
2
4
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

64% (01:44) correct 36% (01:50) wrong based on 293 sessions

HideShow timer Statistics

Verbal Question of The Day: Day 278: Critical Reasoning


Subscribe to GMAT Question of the Day: E-mail | RSS
For All QOTD Questions Click Here


Commemorative plaques cast from brass are a characteristic art form of the Benin culture of West Africa. Some scholars, noting that the oldest surviving plaques date to the 1400s, hypothesize that brass-casting techniques were introduced by the Portuguese, who came to Benin in 1485 A.D. But Portuguese records of that expedition mention cast-brass jewelry sent to Benin’s king from neighboring Ife. So it is unlikely that Benin’s knowledge of brass casting derived from the Portuguese.

Which of the following, if true, most strengthens the argument?

(A) The Portuguese records do not indicate whether their expedition of 1485 included metalworkers.

(B) The Portuguese had no contact with Ife until the 1500s.

(C) In the 1400s the Portuguese did not use cast brass for commemorative plaques.

(D) As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans.

(E) Copper, which is required for making brass, can be found throughout Benin territory.

_________________

Have an MBA application Question? ASK ME ANYTHING!

My Stuff: Four Years to 760 | MBA Trends for Indian Applicants

My GMAT Resources
V30-V40: How to do it! | GMATPrep SC | GMATPrep CR | GMATPrep RC | Critical Reasoning Megathread | CR: Numbers and Statistics | CR: Weaken | CR: Strengthen | CR: Assumption | SC: Modifier | SC: Meaning | SC: SV Agreement | RC: Primary Purpose | PS/DS: Numbers and Inequalities | PS/DS: Combinatorics and Coordinates

My MBA Resources
Everything about the MBA Application | Over-Represented MBA woes | Fit Vs Rankings | Low GPA: What you can do | Letter of Recommendation: The Guide | Indian B Schools accepting GMAT score | Why MBA?

My Reviews
Veritas Prep Live Online

GMAT Club Verbal Expert
User avatar
P
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 1909
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
QOTD:Commemorative plaques cast from brass are a  [#permalink]

Show Tags

New post 09 May 2018, 22:49
1
The author concludes that "it is unlikely that Benin’s knowledge of brass casting derived from the Portuguese." Since we need to strengthen the argument, let's make sure we understand the author's logic:

  • "Commemorative plaques cast from brass are a characteristic art form of the Benin culture of West Africa." - This background information tells us that cast-brass plaques are a typical form of art in Benin culture.
  • "The oldest surviving plaques date to the 1400s." - These plaques have been a part of Benin culture since at least the 1400s (maybe earlier).
  • "Some scholars hypothesize that brass-casting techniques were introduced by the Portuguese, who came to Benin in 1485 A.D." - How did the people of Benin learn brass-casting techniques? Perhaps from the Portuguese. This hypothesis is consistent with the date evidence (the earliest known plaques date to the 1400s, and the Portuguese came to Benin in the 1400s).
  • However, "Portuguese records of that expedition mention cast-brass jewelry sent to Benin’s king from neighboring Ife." - When the Portuguese first showed up, Benin already had cast-brass jewelry from Ife. This means that Benin had already been introduced to cast-brass prior to the arrival of the Portugal. This evidence seems to hurt the hypothesis of some scholars. The author thus concludes that Benin's knowledge of brass casting probably did not derive from (or "originate from") the Portuguese.

We need something that strengthens the author's argument (not the scholar's hypothesis):

Quote:
(A) The Portuguese records do not indicate whether their expedition of 1485 included metalworkers.

Notice that (A) does NOT say, "Portuguese records indicate that the expedition did not include metalworkers." (A) says that the records don't indicate either way. So perhaps the expedition included metalworkers and perhaps it did not. Although this leaves open the possibility that the expedition did not include metalworkers, the evidence in (A) is not very strong. Let's look for something better.

Quote:
(B) The Portuguese had no contact with Ife until the 1500s.

The evidence tells us that Benin had cast-brass objects from Ife before they encountered the Portuguese. This suggests that the people of Benin may have learned about cast-brass from Ife, not from the Portuguese.

But what if the people of Ife learned about brass casting from the Portuguese? In that case, any knowledge about brass casting transferred from Ife to Benin actually originated (or derived) from the Portuguese. In other words, if the Portuguese taught the people of Ife about brass casting and then the people of Ife taught the people of Benin about brass casting, then Benin's knowledge of brass casting derived from the Portuguese (even though it was not transferred directly from the Portuguese to Benin).

This would obviously hurt the argument. Choice (B) eliminates this possibility and thus strengthens the argument. Hang on to (B).

Quote:
(C) In the 1400s the Portuguese did not use cast brass for commemorative plaques.

All that matters is that the Portuguese knew how to cast brass. We don't care how the Portuguese used cast brass. Even if the Portuguese did not make cast brass commemorative plaques, they still could have taught the people of Benin how to cast brass. Thus, (C) does not strengthen the argument and can be eliminated.

Quote:
(D) As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans.

This statement doesn't tell us anything about the origin of the artists' knowledge of brass casting. This statement could be true whether their knowledge derived from the Portuguese or from the people of Ife. Thus, (D) can be eliminated.

Quote:
(E) Copper, which is required for making brass, can be found throughout Benin territory.

This simply tells us that Benin had one of the materials needed to make brass. As with (D), this doesn't tell us anything about the origin of the artists' knowledge of brass casting. Eliminate (E).

(B) is the best answer.
_________________

GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | GMAT blog | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

YouTube LIVE verbal webinars
Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Need an expert reply?
Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja and @GMATNinjaTwo in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal

examPAL Representative
User avatar
B
Joined: 01 Mar 2017
Posts: 117
Re: QOTD:Commemorative plaques cast from brass are a  [#permalink]

Show Tags

New post 10 May 2018, 03:36
The answer is B

Let's break it down logically: the claim is that since bronze casting came to Benin from the Ife, it did not derive from the Portuguese. This is true, if we assume that the Ice did not themselves get it from the Portuguese. Thus, the argument is great strengthened if it is true that (B) The Portuguese had no contact with Ife until the 1500s.


Another way to solve is by process of elimination:

(A) The Portuguese records do not indicate whether their expedition of 1485 included metalworkers. if they indicated that there were no metalworkers, this would indeed strengthen - but just not indicating doesn't help much


(C) In the 1400s the Portuguese did not use cast brass for commemorative plaques.if we knew they didn't cast brass at all this would strengthen, but merely that they didn't use it for this purpose doesn't mean that people in Benin didn't;t adopt it for this reason

(D) As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans. this weakens the argument somewhat, as it suggests a connection between brass plates and the Eurpoeans for people in Benin

(E) Copper, which is required for making brass, can be found throughout Benin territory. irrelevant - the question is where they learned the technique
_________________

Dave Green
Senior tutor at examPAL
Signup for a free GMAT course
Image
Image

Manager
Manager
avatar
B
Joined: 08 Nov 2015
Posts: 80
GMAT 1: 460 Q32 V22
Re: QOTD:Commemorative plaques cast from brass are a  [#permalink]

Show Tags

New post 12 May 2018, 01:51
souvik101990 wrote:

Verbal Question of The Day: Day 278: Critical Reasoning


Subscribe to GMAT Question of the Day: E-mail | RSS
For All QOTD Questions Click Here


Commemorative plaques cast from brass are a characteristic art form of the Benin culture of West Africa. Some scholars, noting that the oldest surviving plaques date to the 1400s, hypothesize that brass-casting techniques were introduced by the Portuguese, who came to Benin in 1485 A.D. But Portuguese records of that expedition mention cast-brass jewelry sent to Benin’s king from neighboring Ife. So it is unlikely that Benin’s knowledge of brass casting derived from the Portuguese.

Which of the following, if true, most strengthens the argument?

(A) The Portuguese records do not indicate whether their expedition of 1485 included metalworkers.

(B) The Portuguese had no contact with Ife until the 1500s.

(C) In the 1400s the Portuguese did not use cast brass for commemorative plaques.

(D) As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans.

(E) Copper, which is required for making brass, can be found throughout Benin territory.



Lets analyze the argument.
P1: Commemorative plaques cast from brass are characteristics from Western Africa.
P2: Scholars hypothesize that brass cutting technique was introduced in 1400s by Portuguese who came to Benin
P3: (Contradictory) Portuguese expedition record show that cast-brass jewelery waa sent to Benin's from Neighboring Ife.
C: Benin's knowledge is unlikely to be derived from Portuguese.

Out of the option.

A. Irrelevant
B. Correct if Portuguese didnt had contact with the Ife until 1500 then it is most likely that the brass-cutting technique is proprietary to Benin.
C, D and E are irrelevant here.
Manager
Manager
avatar
G
Joined: 02 Jun 2015
Posts: 192
Location: Ghana
Premium Member
Re: QOTD:Commemorative plaques cast from brass are a  [#permalink]

Show Tags

New post 16 May 2018, 06:57
souvik101990 wrote:

Verbal Question of The Day: Day 278: Critical Reasoning


Subscribe to GMAT Question of the Day: E-mail | RSS
For All QOTD Questions Click Here


Commemorative plaques cast from brass are a characteristic art form of the Benin culture of West Africa. Some scholars, noting that the oldest surviving plaques date to the 1400s, hypothesize that brass-casting techniques were introduced by the Portuguese, who came to Benin in 1485 A.D. But Portuguese records of that expedition mention cast-brass jewelry sent to Benin’s king from neighboring Ife. So it is unlikely that Benin’s knowledge of brass casting derived from the Portuguese.

Which of the following, if true, most strengthens the argument?

(A) The Portuguese records do not indicate whether their expedition of 1485 included metalworkers.

(B) The Portuguese had no contact with Ife until the 1500s.

(C) In the 1400s the Portuguese did not use cast brass for commemorative plaques.

(D) As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans.

(E) Copper, which is required for making brass, can be found throughout Benin territory.



[quote="sayantanc2k"] ((From a retired discussion on the same question)

This is one important concept frequently used to trap candidates.
Premise; X
Conclusion: Y
Argument: X hence Y ( X---> Y)
The strengthening (or weakening) statement of this ARGUMENT (i.e. X---> Y) must strengthen (or weaken) the LINK between this argument, not the conclusion (Y) separately.

In the above example
X = Portuguese records of that expedition mention cast-brass jewelry sent to Benin’s king from neighboring Ife
Y = So it is unlikely that Benin’s knowledge of brass casting derived from the Portuguese.

Please observe that option C strengthens Y in isolation. It has nothing to do with the argument X---> Y. Hence C is not correct.


Hi sayantanc2k,

Thank you so much for the clear explanation that I find very helpful in tackling most argument-based CR problems: the idea about
focusing on the LINK between the PREMISE (about X) and the CONCLUSION (about Y).

Given the question under discussion and the fact that option (C) strengthens Y (i.e., the conclusion) IN ISOLATION, there seems to be a difference between strengthen/weaken the ARGUMENT and strengthen/weaken the CONCLUSION (kindly correct me if I am wrong). In that case, would option (C) be better than (B), if the questions asks to strengthen the CONCLUSION (not the argument)?

Thank you.
_________________

Kindly press kudos if you find my post helpful

Re: QOTD:Commemorative plaques cast from brass are a &nbs [#permalink] 16 May 2018, 06:57
Display posts from previous: Sort by

QOTD:Commemorative plaques cast from brass are a

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

Events & Promotions

PREV
NEXT


GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.