Critical Reasoning (CR) | Re: Potato cyst nematodes are a pest of potato crops. The nematodes can li

Hi ExpertsGMATNinja ,

I would present my analysis so that you could see gap in my understanding .

I understood the argument, but couldn't figure out between B and D.
Well the argument is that,
chemical ( similar to that of emitted by potato roots) which makes these pests emerge , will make these pests emerge , and these pests ,in absence of potato crop,will die of starvation.

Can i infer that if there were potato crop then they would survive after they would have emerged from their protective shells.

So basically , if we have a statement that these pests once emerged out of cyst , survive only in presence of potato crop, then we can say that yes authors claim is strengthened.

So B is very close to what i was thinking.

But D says Test experiments on fields have shown that these chemicals were successful in killing 90% of pests.

But i guess GMAT has different plans, and wants me to focus more on my mistakes.
So looking for learning what went wrong in this question?

I read somewhere
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Statistics : Posted by rmahe11 • on 04 Jun 2008, 16:13 • Replies 19 • Views 31017

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