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

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

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26 Oct 2011, 19:19
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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 an 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 unusually 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 Yoruba, 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: OA

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Last edited by Narenn on 31 Oct 2013, 11:38, edited 1 time in total.
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Re: westernized Black Africans and high blood pressure [#permalink]

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27 Oct 2011, 09:18
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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04 Nov 2013, 01:58
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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06 Nov 2013, 11:12
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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07 Nov 2013, 12:02
My question for this one is: For answer choice A, are we supposed to assume that they mean black people, and not all people?

That does not seem clear to me?
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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07 Nov 2013, 21:25
My question for this one is: For answer choice A, are we supposed to assume that they mean black people, and not all people?

That does not seem clear to me?

The question already tells you :
Which of the following statements about present-day, westernized Black Africans, if true, would most tend to confirm the researchers' hypothesis?
So this applies to all the options not just choice A

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

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23 Sep 2014, 00:50
man selected D was a stupid mistake.....
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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02 Oct 2014, 05:49
I'm not fully convinced between D and A. Can someone clarify?
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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28 Oct 2015, 20:56
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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10 Jan 2016, 02:40
this is not a good question.If A is correct we have to assume that Blacks lived in Senegal and Gambia and they consumed lots of salt.
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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25 Sep 2016, 00:16
D is a trap !

Premise :
Westernized Black Africans are about twice as likely as White Africans to develop high blood pressure.

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.

Researchers hypothesis: In a society where western high salt diet is common, Western black africans are more likely to develop high blood pressure than white africans because the former's genes are adapted to a low salt diet(implied from "to an 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. - This is close to the reasoning of the researcher - Availability of salt in senegal & Gambia means the people of this area are adapted to a high salt diet - means the people are less likely to have high blood pressure.

(d) Blood pressures are low among the Yoruba, who, throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines. - Take a close look and this weakens the researchers reasoning.
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Re: Black Americans are, on the whole, about twice as likely as [#permalink]

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26 Oct 2016, 05:09
pkm9995109794 wrote:
this is not a good question.If A is correct we have to assume that Blacks lived in Senegal and Gambia and they consumed lots of salt.

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

This means that the people of this area are adapted to a high salt diet, so they - are less likely to have high blood pressure. This is what the conclusion claims. It does not matter the color or race of the people.

It supports the argument by showing a case in which the cause produces the effect.
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Re: Black Americans are, on the whole, about twice as likely as   [#permalink] 26 Oct 2016, 05:09
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