Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 27 May 2017, 03:50

### 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

# Black Americans are, on the whole, about twice as likely as

Author Message
TAGS:

### Hide Tags

Intern
Joined: 25 Nov 2010
Posts: 12
Followers: 0

Kudos [?]: 30 [6] , given: 1

Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

03 Mar 2012, 14:41
6
KUDOS
24
This post was
BOOKMARKED
00:00

Difficulty:

95% (hard)

Question Stats:

45% (02:52) correct 55% (02:05) wrong based on 751 sessions

### HideShow timer Statistics

Black Americans are, on the whole, about twice as likely as White Americans to develop high blood pressure. This likelihood also holds for Westernized Black Africans when compared to White Africans.
Researchers have hypothesized that this predisposition in westernized blacks may reflect an interaction between western high-salt diets and genes that adapted to environmental scarcity of salt.
Which of the following statements about present-day, westernized black Africans, if true, would most tend to confirm the researchers hypothesis?

a) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low.

b) The usually high salt consumption in certain areas of Africa represents a serious health problem.

c) Because of their blood pressure levels, most White Africans have markedly decreased their salt consumption.

d) Blood pressures are low among the Yorubam who throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines

e) No significant differences in salt metabolism have been found between those people who have had salt available throughout their history and those who have not.

[Reveal] Spoiler:
Guys I need help with the following question. The correct answer is A. I chose D and would like to know the reasoning for the correct answer. If someone can help me understand the reasoning and the way to approach the correct answer, I will certainly appreciate it.
Thanks,
Sameer.
[Reveal] Spoiler: OA

Last edited by JarvisR on 25 Jul 2015, 00:05, edited 1 time in total.
If you have any questions
New!
Manager
Joined: 07 Dec 2011
Posts: 161
Location: India
Followers: 1

Kudos [?]: 41 [3] , given: 31

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

03 Mar 2012, 19:54
3
KUDOS
1
This post was
BOOKMARKED
According to A: Blood pressures are low among westernized black africans who have descended entirely from people of senegal and gambia where salt was always available. This implies that these people have descended from a people who were used to metabolizing a moderate to high level of salt because there was no scarcity. The fact that these descendants of senegalese and gambian africans have low blood pressure shows that they can metabolize higher levels of salts like their Sengalese and Gambian ancestors. Thus the link must be genetic and predisposition to high blood pressure may reflect an interaction between western high-salt diets and genes of most africans (not senegalese and gambian) that adapted to environmental scarcity of salt. Thus A is correct.

that was a tough one to write for me. must work on writing skills

D refers to the yorubams blood pressure but does not relate it to those of modern day westernized black africans. so incorrect.
Manager
Joined: 01 Nov 2010
Posts: 179
Location: Zürich, Switzerland
Followers: 2

Kudos [?]: 45 [0], given: 20

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

04 Mar 2012, 13:33
karun0109 wrote:
According to A: Blood pressures are low among westernized black africans who have descended entirely from people of senegal and gambia where salt was always available. This implies that these people have descended from a people who were used to metabolizing a moderate to high level of salt because there was no scarcity. The fact that these descendants of senegalese and gambian africans have low blood pressure shows that they can metabolize higher levels of salts like their Sengalese and Gambian ancestors. Thus the link must be genetic and predisposition to high blood pressure may reflect an interaction between western high-salt diets and genes of most africans (not senegalese and gambian) that adapted to environmental scarcity of salt. Thus A is correct.

that was a tough one to write for me. must work on writing skills

D refers to the yorubams blood pressure but does not relate it to those of modern day westernized black africans. so incorrect.

Looks like to answer above question, one needs to have clear understanding about various geogrophies on earth.
BSchool Forum Moderator
Status: Flying over the cloud!
Joined: 17 Aug 2011
Posts: 886
Location: Viet Nam
GMAT Date: 06-06-2014
GPA: 3.07
Followers: 74

Kudos [?]: 657 [0], given: 44

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

04 Mar 2012, 18:48
This is a tough answer to refer the metabolism of Western Black American. Choice A states that "The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low". So, these descendants are the exceptional cases of overall African people. Other Africans will get the high blood pressure caused by the interaction between genes and high-salt diets.
_________________

Rules for posting in verbal gmat forum, read it before posting anything in verbal forum
Giving me + 1 kudos if my post is valuable with you

The more you like my post, the more you share to other's need

CR: Focus of the Week: Must be True Question

Manager
Joined: 28 Feb 2011
Posts: 57
Followers: 0

Kudos [?]: 26 [0], given: 18

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

05 Mar 2012, 01:26
could someone provide a detailed reasoning on how to arrive at correct answer??
Senior Manager
Joined: 18 Sep 2009
Posts: 356
Followers: 3

Kudos [?]: 488 [1] , given: 2

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

05 Mar 2012, 08:52
1
KUDOS
2
This post was
BOOKMARKED
conclusion: "Researchers have hypothesized that this predisposition in westernized Blacks may reflect an interaction between western high-salt diets and genes that adapted to an environmental scarcity of salt." This is saying that researchers believe that westernized blacks have high blood pressure because their ancestors adapted to low sodium diets. This adaptation & the tons of salt in a western diet are what these researchers say causes high blood pressure.

(A) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low."
Rember that high blood pressure is caused by high salt diet + genetic adaptation to LOW salt environments. Those in Senegal and Gambia are in a place where there is PLENTY of salt and they don't have high blood pressure. This suggests that the researchers are right because those from Gambia and Senagal have had generations to adapt their genes to this kind of diet, unlike other africans.
(B) certain areas in Africa ? out of scope
(c) argument is about western black Americans not about white Americans . out of scope.
(D) It just give info about Yoruba and not relating to anyone in the argument.
(E) certainly out of scope
Manager
Joined: 28 Apr 2011
Posts: 184
Followers: 0

Kudos [?]: 8 [0], given: 6

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

03 Apr 2012, 04:42
IMO A
......

Is it GMAT prep question?
Manager
Status: Bunuel's fan!
Joined: 08 Jul 2011
Posts: 233
Followers: 1

Kudos [?]: 47 [0], given: 55

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

29 Apr 2012, 10:46
Dang it, i forgot to check the source and did a gmat prep question ( I am trying to save it for later). Still, this is the hard one for me.
Intern
Joined: 21 Jun 2013
Posts: 44
Followers: 0

Kudos [?]: 29 [3] , given: 129

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

19 Oct 2013, 22:15
3
KUDOS
Premise: BP in BA ~ (equivalent to) 2(BP in WA) and BP in WBAf ~ 2(BP in WWAf)
Conclusion: Reason for above trend - Interaction b/w high salt in western diet and genes for low salt availability.

Let's see A and D.
a) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low.
Salt always available; therefore normal genes; therefore BP is not high. Somewhat similar to the research.

d) Blood pressures are low among the Yorubam who throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines.
Salt unavailable; therefore genes should be low salt genes; therefore BP should be high but it is given to be low here. Hence, there is a contradiction.

A is better than D here.
Senior Manager
Status: Student
Joined: 26 Aug 2013
Posts: 259
Location: France
Concentration: Finance, General Management
Schools: EMLYON FT'16
GMAT 1: 650 Q47 V32
GPA: 3.44
Followers: 2

Kudos [?]: 63 [2] , given: 401

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

11 Jan 2014, 07:33
2
KUDOS
Got trouble with this one!

Here is the explanation I have:

- Your are looking for something that proves the link btw: scarcity of salt ==> change in habit ==> high blood pressure.
- Therefore, it will strenghten the argument if you claim that descendent of black american have low blood pressure. Why? Well because they did not get used to scarcity in salt!

If the descendent of people coming from Africa have low blood pressure, it means that the only factor that enables the developpement of high blood pressure is the fact that your organism was used to a scarcity in salt

This is explained in answer A...

Hope it is clear for everyone!
_________________

Think outside the box

Manager
Joined: 11 Aug 2011
Posts: 195
Location: United States
Concentration: Economics, Finance
GMAT Date: 10-16-2013
GPA: 3
WE: Analyst (Computer Software)
Followers: 12

Kudos [?]: 309 [0], given: 886

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

20 Mar 2014, 05:08
Hi E-gmat team,

Can you help on this question.
I was not able to understand this question.

Regards
Akhil
_________________

Kudos me if you like my post !!!!

Senior Manager
Joined: 17 Sep 2013
Posts: 388
Concentration: Strategy, General Management
GMAT 1: 730 Q51 V38
WE: Analyst (Consulting)
Followers: 19

Kudos [?]: 296 [0], given: 139

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

18 Jul 2014, 20:44
akhil911 wrote:
Hi E-gmat team,

Can you help on this question.
I was not able to understand this question.

Regards
Akhil

Lemme try..I assume its A vs D..

A is clear in its intent as it shows that people with high salt access in the past do not suffer with the same condition as Africans living in salt scarce areas do suffer..
D is talking about proximity to 2 major salt sources..but we cannot be sure of their eating habits or about availablity of other salt sources etc

A is better than D
_________________

Appreciate the efforts...KUDOS for all
Don't let an extra chromosome get you down..

Manager
Joined: 05 Jun 2012
Posts: 111
Schools: IIMA
Followers: 1

Kudos [?]: 15 [0], given: 66

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

27 Jul 2014, 06:21
Since passage is talking about adaption A talks about that ; strengthen the premise so it is correct
_________________

If you are not over prepared then you are under prepared !!!

GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10363
Followers: 1000

Kudos [?]: 225 [0], given: 0

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

21 Aug 2015, 07:54
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.
Senior Manager
Joined: 01 Nov 2013
Posts: 348
GMAT 1: 690 Q45 V39
WE: General Management (Energy and Utilities)
Followers: 6

Kudos [?]: 188 [0], given: 403

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

29 Aug 2015, 11:41
Can someone explain the above CR ?

Is this really GMATPrep question?

Please explain option A in detail.
_________________

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.

I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.-Mohammad Ali

Manager
Joined: 08 Jan 2015
Posts: 93
Location: Thailand
Schools: Duke '19 (A), HKU (A)
GMAT 1: 540 Q41 V23
GMAT 2: 570 Q44 V24
GMAT 3: 550 Q44 V21
GMAT 4: 660 Q48 V33
GPA: 3.31
WE: Science (Other)
Followers: 0

Kudos [?]: 18 [1] , given: 654

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

22 Mar 2016, 22:11
1
KUDOS
I got it wrong too. It's very tricky question.

After reviewing, I think I understand why A is correct.

The argument goes like this:

People who have specific genes get high blood pressure more easily when eating high salt diets.

It means that if someone have these genes, they will likely to get high blood pressure.
(X causes Y)

So, one way to strengthen the argument is to confirm that if the cause doesn't occur, then the result will not occur.

Choice A says that people who don't have those specific genes(becasue their ancestors lived in the place where salt is not scarce) will not get high blood pressure.
(Not X then Not Y)

Correct me if I'm wrong
Manager
Joined: 01 Mar 2014
Posts: 139
Schools: Tepper '18
Followers: 4

Kudos [?]: 9 [1] , given: 616

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

29 Mar 2016, 00:07
1
KUDOS
samirashok wrote:
Black Americans are, on the whole, about twice as likely as White Americans to develop high blood pressure. This likelihood also holds for Westernized Black Africans when compared to White Africans.
Researchers have hypothesized that this predisposition in westernized blacks may reflect an interaction between western high-salt diets and genes that adapted to environmental scarcity of salt.
Which of the following statements about present-day, westernized black Africans, if true, would most tend to confirm the researchers hypothesis?

a) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low.

b) The usually high salt consumption in certain areas of Africa represents a serious health problem.

c) Because of their blood pressure levels, most White Africans have markedly decreased their salt consumption.

d) Blood pressures are low among the Yorubam who throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines

e) No significant differences in salt metabolism have been found between those people who have had salt available throughout their history and those who have not.

[Reveal] Spoiler:
Guys I need help with the following question. The correct answer is A. I chose D and would like to know the reasoning for the correct answer. If someone can help me understand the reasoning and the way to approach the correct answer, I will certainly appreciate it.
Thanks,
Sameer.

I suppose the choice is really between A and D.

Let's analyze the researchers hypothesis - high BP in WB is due to 2 reasons - 1) high salt western diets, and 2) genes adapted to environmental scarcity of salt.

A) normal salt availability - genes not adapted to scarcity of salt - low BP. (This means that because the genes did not have to adapt to low salt environment, they are still able to cope with high salt diet, and hence BP is low) - supports the researchers' hypothesis.

D) Low salt environment - low BP - but the genes are still adapted to low salt environments -which means when exposed to high salt diets in the west they should have developed high BP, but did not - This actually weakens the argument.

Senior Manager
Joined: 15 Oct 2015
Posts: 376
Concentration: Finance, Strategy
GPA: 3.93
WE: Account Management (Education)
Followers: 5

Kudos [?]: 105 [0], given: 211

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

29 Mar 2016, 17:16
samirashok wrote:
Black Americans are, on the whole, about twice as likely as White Americans to develop high blood pressure. This likelihood also holds for Westernized Black Africans when compared to White Africans.
Researchers have hypothesized that this predisposition in westernized blacks may reflect an interaction between western high-salt diets and genes that adapted to environmental scarcity of salt.
Which of the following statements about present-day, westernized black Africans, if true, would most tend to confirm the researchers hypothesis?

a) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low.

b) The usually high salt consumption in certain areas of Africa represents a serious health problem.

c) Because of their blood pressure levels, most White Africans have markedly decreased their salt consumption.

d) Blood pressures are low among the Yorubam who throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines

e) No significant differences in salt metabolism have been found between those people who have had salt available throughout their history and those who have not.

[Reveal] Spoiler:
Guys I need help with the following question. The correct answer is A. I chose D and would like to know the reasoning for the correct answer. If someone can help me understand the reasoning and the way to approach the correct answer, I will certainly appreciate it.
Thanks,
Sameer.

Seriously there is a thousand and one assumption in this argument nay plenty conclusions.
What if it wasn't about the gene adaption to environment? That means IF THERE ARE BLACK AFRICANS LIVING IN HISTORICALLY SALTY DIET ENVIRONMENT THEY WOULDN'T ADAPT. THEY WOULD HAVE HYPERTENSION.
Now only option A says They Would Adapt, reassuring us that it's gene adaptation to environ.

Now do know why it doesn't matter anymore figuring out how to tell if the listed countries are black Africans?
Because there is no other option that is directed at the assumption above. Gmat knows you don't need to know even simple geography. Just hardcore logic. period.
Posted from my mobile device

Posted from my mobile device
Manager
Joined: 17 Sep 2015
Posts: 54
Location: United Kingdom
GMAT 1: 640 Q42 V38
GPA: 3.1
Followers: 1

Kudos [?]: 16 [0], given: 14

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

15 May 2016, 12:49
Please correct me if iam wrong in my thinking :-

The scarcity might have forced the ancestors of a certain race to long for salt, and when the salt was provided through Western Diets they went on an overdrive, and ended up developing High Blood pressure.

Hence any choice that may prove the link between the scarcity of salt and HBP.

The answer choice A says since Senegal and Gambia has salt, they never longed for it, hence the diets did not attracted them, and at the end of it did not get HBP....
Senior Manager
Status: Always try to face your worst fear because nothing GOOD comes easy. You must be UNCOMFORTABLE to get to your COMFORT ZONE
Joined: 15 Aug 2014
Posts: 365
Concentration: Marketing, Technology
GMAT 1: 570 Q44 V25
GMAT 2: 600 Q48 V25
WE: Information Technology (Consulting)
Followers: 8

Kudos [?]: 53 [0], given: 472

Re: Black Americans are, on the whole, about twice as likely as [#permalink]

### Show Tags

04 Aug 2016, 23:49
samirashok wrote:
Black Americans are, on the whole, about twice as likely as White Americans to develop high blood pressure. This likelihood also holds for Westernized Black Africans when compared to White Africans.
Researchers have hypothesized that this predisposition in westernized blacks may reflect an interaction between western high-salt diets and genes that adapted to environmental scarcity of salt.
Which of the following statements about present-day, westernized black Africans, if true, would most tend to confirm the researchers hypothesis?

a) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low.

b) The usually high salt consumption in certain areas of Africa represents a serious health problem.

c) Because of their blood pressure levels, most White Africans have markedly decreased their salt consumption.

d) Blood pressures are low among the Yorubam who throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines

e) No significant differences in salt metabolism have been found between those people who have had salt available throughout their history and those who have not.

[Reveal] Spoiler:
Guys I need help with the following question. The correct answer is A. I chose D and would like to know the reasoning for the correct answer. If someone can help me understand the reasoning and the way to approach the correct answer, I will certainly appreciate it.
Thanks,
Sameer.

I still have problem to understand why choice 'D' is incorrect
_________________

"When you want to succeed as bad as you want to breathe, then you’ll be successful.” - Eric Thomas

I need to work on timing badly!!

Re: Black Americans are, on the whole, about twice as likely as   [#permalink] 04 Aug 2016, 23:49
Similar topics Replies Last post
Similar
Topics:
1 Whatever else might be said about American elections 1 29 Apr 2017, 11:13
12 Black Americans are, on the whole, about twice as likely as 9 11 Feb 2016, 00:33
2 I love to talk about how Critical Reasoning is much like 3 19 Feb 2015, 12:50
15 Black Americans are, on the whole, about twice as likely as 11 26 Oct 2016, 06:09
2 Black Americans are, on the whole, about twice as likely as 18 09 Mar 2014, 07:06
Display posts from previous: Sort by