• 7 CATs FREE!
    If you earn 100 Forum Points

    Engage in the Beat The GMAT forums to earn
    100 points for $49 worth of Veritas practice GMATs FREE

    Veritas Prep
    VERITAS PRACTICE GMAT EXAMS
    Earn 10 Points Per Post
    Earn 10 Points Per Thanks
    Earn 10 Points Per Upvote
    REDEEM NOW

The demand for quinine, an ancient Peruvian

This topic has expert replies
Legendary Member
Posts: 809
Joined: 24 Mar 2010
Thanked: 50 times
Followed by:4 members

The demand for quinine, an ancient Peruvian

by akhpad » Tue Jul 20, 2010 3:51 am
Source: Veritas Prep CR-1

Q41.
The demand for quinine, an ancient Peruvian derivatives from the cinchona tree used to threat malaria, is slowly diminishing in Sub-Sahara Africa. Since quinine is still one of the most cost-effective antimalarial drugs to produce, government official in Sub-Sahara African nations attribute the decrease in demand to their active insecticide campaign against the anopheles mosquito, the primary vector for transmitting the disease.

Which of the following, if true, would most seriously weaken the argument officials' explanation for lower demand for quinine?

A: Spraying the interior walls of leaving structures with insecticide is much more cost-effective than wide-scale field spraying.
B: Mosquito nets have been shown to greatly reduce the rate of malarial infection, but only 1 out of 20 people in Africa own a bed net.
C: A mutated strain of malaria, resistant to quinine, has spread into Africa from Asia within the last few decades.
D: More than 1.7 million people die of malaria every year in Sub-Sahara Africa composing almost 90% of all worldwide maria deaths.
E: Massive insecticide spraying against malaria took place in many regions of Africa in the 1950s, with mixed results.

OA: C

Please explain.
Last edited by akhpad on Tue Jul 20, 2010 8:00 pm, edited 1 time in total.

Master | Next Rank: 500 Posts
Posts: 364
Joined: 20 Apr 2010
Thanked: 31 times
Followed by:3 members

by FightWithGMAT » Tue Jul 20, 2010 4:25 am
akhp77 wrote:Source: Veritas Prep CR-1

Q41.
The demand for quinine, an ancient Peruvian derivatives from the cinchona tree used to threat malaria, is slowly diminishing in Sub-Sahara Africa. Since quinine is still one of the most cost-effective antimalarial drugs to produce, government official in Sub-Sahara African nations attribute the decrease in demand to their active insecticide campaign against the anopheles mosquito, the primary vector for transmitting the disease.

Which of the following, if true, would most seriously weaken the argument officials' explanation for lower demand for quinine?

A: Spraying the interior walls of leaving structures with insecticide is much more cost-effective than wide-scale field spraying.
B: Mosquito nets have been shown to greatly reduce the rate of malarial infection, but only 1 out of 20 people in Africa own a bed net.
C: A mutated strain of malaria, resistant to quinine, has spread into Africa from Asia within the last few decades.
D: More than 1.7 million people die of malaria every year in Sub-Sahara Africa composing almost 90% of all worldwide maria deaths.
E: Massive insecticide spraying against malaria took place in many regions of Africa in the 1950s, with mixed results.

Please explain.
IMO C

Shows an alternate cause

User avatar
Master | Next Rank: 500 Posts
Posts: 216
Joined: 23 Jul 2008
Location: Pune, India
Thanked: 5 times
GMAT Score:700

by ayushiiitm » Tue Jul 20, 2010 4:26 am
akhp77 wrote:Source: Veritas Prep CR-1

Q41.
The demand for quinine, an ancient Peruvian derivatives from the cinchona tree used to threat malaria, is slowly diminishing in Sub-Sahara Africa. Since quinine is still one of the most cost-effective antimalarial drugs to produce, government official in Sub-Sahara African nations attribute the decrease in demand to their active insecticide campaign against the anopheles mosquito, the primary vector for transmitting the disease.

Which of the following, if true, would most seriously weaken the argument officials' explanation for lower demand for quinine?

A: Spraying the interior walls of leaving structures with insecticide is much more cost-effective than wide-scale field spraying.out of scope. Our focus is not on which spraying is effective
B: Mosquito nets have been shown to greatly reduce the rate of malarial infection, but only 1 out of 20 people in Africa own a bed net.Mosquito nets could have been a reason, that people are not buying the medicine, but second part says that not much people have bought
C: A mutated strain of malaria, resistant to quinine, has spread into Africa from Asia within the last few decades. could be a reason to weaken
D: More than 1.7 million people die of malaria every year in Sub-Sahara Africa composing almost 90% of all worldwide maria deaths. the numbers refute the official's explanation
E: Massive insecticide spraying against malaria took place in many regions of Africa in the 1950s, with mixed results.
out of scope
Please explain.
So i had to decide between C and D. I used POE for it
I choose C

because in D, although the officially the figure remains quite large, we dont know, if it has come down from its previous high

C suggests that another kind of virus has come up, so people are not buying due to that reason
Success is a journey.....enjoy every moment of it

Master | Next Rank: 500 Posts
Posts: 305
Joined: 27 Jul 2009
Thanked: 10 times

by Shawshank » Tue Jul 20, 2010 6:35 am
imo -- c
++++++++++++++++++++++++++++++
Shawshank Redemtion -- Hope is still alive ...

Legendary Member
Posts: 809
Joined: 24 Mar 2010
Thanked: 50 times
Followed by:4 members

by akhpad » Tue Jul 20, 2010 8:02 pm
Thanks

I got it. C is an alternate cause.