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Scientists have made genetic modifications to cotton to

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Scientists have made genetic modifications to cotton to [#permalink] New post 15 Dec 2005, 23:08
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Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically.


Which of the following would it be most useful to know in order to evaluate the argument?

A. Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed

B. Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops

C. Whether for most farmers who grow cotton it is their primary crop

D. Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did

E. Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide
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 [#permalink] New post 15 Dec 2005, 23:56
Answer is D
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 [#permalink] New post 16 Dec 2005, 04:07
E is the best IMO.
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 [#permalink] New post 16 Dec 2005, 13:17
we are worried about the cost.

so B is the answer.
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 [#permalink] New post 16 Dec 2005, 13:54
B is close but it would have better if it said:

Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on modified crops

D is out as arguments talks about :
the amount of insecticide needed per acre

E is out because argument just concludes that using new modified crop "will not benefit farmers economically".
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 [#permalink] New post 16 Dec 2005, 14:10
Quote:
According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not.


This indicates that the area of cultivation is a factor in the "Farmer's report".

Hence D is right.
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 [#permalink] New post 16 Dec 2005, 19:04
D.

I wonder how B is correct. Why are we bothered about the other crop?

Last edited by Bhai on 16 Dec 2005, 21:26, edited 1 time in total.
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Re: CR - Genetic modifications [#permalink] New post 16 Dec 2005, 20:21
gamjatang wrote:
Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically.


Which of the following would it be most useful to know in order to evaluate the argument?

B. Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops

D. Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did



We are talking about the 4 costs here:
insecticide needed for modified seed VS that needed for ordinary seed
cost of modified seed VS that of ordinary seed

"the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not" -----> cost of insecticide needed for MS < that for OS

" since the modified seed costs more than ordinary seed" -----> cost of MS > cost of OS

=> TOTAL cost for MS/ arce > TOTAL cost for OS/ arce

-----> WE must know that the two seeds are used in the same number of arce in order to evaluate the conclusion :" switching to the modified seed would be unlikely to benefit most cotton farmers economically"

I go for D.
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 [#permalink] New post 17 Dec 2005, 06:11
My money is on D. Laxie`s explanation suffices.
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 [#permalink] New post 17 Dec 2005, 06:35
GMATT73 wrote:
My money is on D. Laxie`s explanation suffices.


Congratulations on your 2000th post, Matt~!!! :)
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 [#permalink] New post 17 Dec 2005, 06:46
laxieqv wrote:
GMATT73 wrote:
My money is on D. Laxie`s explanation suffices.


Congratulations on your 2000th post, Matt~!!! :)


I didn`t even notice! Thanks Laxie. Pass or fail next week, I will most likely post another 2,000+ times in this forum because the GMAT has become more than just a "test" to me.
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 [#permalink] New post 17 Dec 2005, 06:52
GMATT73 wrote:
laxieqv wrote:
GMATT73 wrote:
My money is on D. Laxie`s explanation suffices.


Congratulations on your 2000th post, Matt~!!! :)


I didn`t even notice! Thanks Laxie. Pass or fail next week, I will most likely post another 2,000+ times in this forum because the GMAT has become more than just a "test" to me.


and I realize how much I love GMATclub ...it has become a part of my everyday....
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 [#permalink] New post 17 Dec 2005, 07:22
And everybody at GMATClub loves YOU! :run
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 [#permalink] New post 17 Dec 2005, 09:39
GMATT73 wrote:
laxieqv wrote:
GMATT73 wrote:
My money is on D. Laxie`s explanation suffices.


Congratulations on your 2000th post, Matt~!!! :)


I didn`t even notice! Thanks Laxie. Pass or fail next week, I will most likely post another 2,000+ times in this forum because the GMAT has become more than just a "test" to me.

hey congrats matt.

are you taking bull by the horns next week?
go for a kill :P

all the best. we all here at gmatclub would like you to stay long after you scored 700+ :wink:
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 [#permalink] New post 17 Dec 2005, 09:47
Thanx Duttsit! But I still need to get into the 600s before I can even begin to think about transcending into the 7th heaven. You on the other hand will cause the Prometric PC to smoke and go haywire!
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 [#permalink] New post 19 Dec 2005, 19:31
nakib77 wrote:
we are worried about the cost.

so B is the answer.


Good.

(B) is the best answer.

and (D) is said to be a trap.
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  [#permalink] 19 Dec 2005, 19:31
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