is it C??

I agree for E.
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Trying hard to achieve something unachievable now....

This is C.

X's population is denser. Thus, Wind farms should be built in Y.

A: Irrelevant
B: This is tempting but doesn't really explain why the mill's should not be built in Y. This requires us to make additional assumptions about greater population.
D: Doesn't weaken, both have the same land mass.

E. Says that population is very dense in one spot for X, but Y is spread out.
Just think of any state with a mega-major city: Illinois . Has Chicago and... thats about it. Chicago contains the majority of the population of Illinois. Now lets compare to say Ohio. Ohio has several major cities, but nothing compared to Chicago. And Ohio's pop is about equal but spread out. Assuming both have same land mass, its easy to see why Ohio would be a worse place to put wind mills.


Now judging from your comments, I can see that E is probably not the answer.

So I say C. The argument assumes that electricity will be purchased outside of Y. I thought this might be something that COULD weaken the argument, but this doesn't really follow the premises as E does. E perfectly explains why its not a good idea to put the mills in Y.

However, we must remember that when weakening the argument, we have to look for two types of choices: one that produces a piece of weakening evidence or one that exposes a faulty assumption.

The argument assumes that both countries will share electricity. This is why choice C is correct.


However, come test day Id still say E. Both are plausible. I guess E just requires us to assume that sparse population means worse for windmilss. This is a very iffy CR if you ask me.


Whoops made an error, fixed it in my reasoning for E with the above example of Ohio and Illinois.

A,C and D out of scope.
B - only population without the land area will not give any conclusion.
E is the answer.

Thanks, quite a stimulating discussion. OA is E.
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GMAT the final frontie!!!.