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# Scientists have made genetic modifications to cotton to

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Senior Manager
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20 Jan 2005, 15:38
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Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmersÂ¡Â¯ reports, 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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Director
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20 Jan 2005, 15:50
To me, the only choice that seems relevant is E

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20 Jan 2005, 15:55
I modify my post.

The argument deals with cost & benefit. The sole choice available in this way is B

Last edited by twixt on 20 Jan 2005, 16:10, edited 1 time in total.

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20 Jan 2005, 16:20
Can you explain why you you choose B, clearly.
I am not convinced with E either now.

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20 Jan 2005, 20:52
B concerns other crops ( other than cotton). So it's not a clear answer in measuring cost-benefit of using modified cotton seed Vs. non-modified cotton seed.

What's the OA?

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20 Jan 2005, 21:34
Why do u guys refute "D" ? I will post OA after some discussion.
Try reasoning...
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20 Jan 2005, 21:44
pb_india wrote:
Why do u guys refute "D" ? I will post OA after some discussion.
Try reasoning...

Well I think D is the best option and I picked D.

I am surprised that no one picked D. I Can't be so bad

Well but ya I will stick to D.
Saurabh Malpani

Last edited by saurabhmalpani on 20 Jan 2005, 22:14, edited 1 time in total.

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21 Jan 2005, 03:06
I was between B and D and chose intially D.
Problem with B is this "other crops" and with D that there is no link with the cost/benefit to use modified cotton...

This one is not so easy.

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21 Jan 2005, 06:31

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21 Jan 2005, 11:09
OA is "B"
Although I am leaning towards E
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22 Jan 2005, 01:32
My thinking is this: If the cotton peticide is very expensive compare to common peticide, even if they only needed a little less peticide for GM cotton the cost difference may still be significant enough for it to be benefitable to switch.

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08 Jan 2011, 08:02
According to my source, OA is E.

I was with B.
If the insecticides for genetic crops are cheaper, that is an advantage.

Te point of E is that if most of the farmers who tried the modified seed did so because they
had previously had to use exceptionally large quantities of insecticide, they might be not a representative sample.

D also could be good, for the same reason as E: not a representative sample.

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Re: CR - Insectisides   [#permalink] 08 Jan 2011, 08:02
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