[逻辑] BeyondGMAT逻辑讲义7.1转基因玉米和黑脉金斑蝶

gotomba问道：
我来分享一下我的思路。请帮看看可以这样想不。
在C和E之间，我有点卡。
我后来自慰的方法是，E虽然说了有很多吃maize的虫和caterpillars竞争吃maize，但是有可能他们也竞争不过caterpillars，所以caterpillars还是能够很痛快的吃maize，相应地吃上面的insecticide，而致死。所以E这个whether。。。不怎么useful。
求拍砖或共鸣。

题目:
Certain genetically modified strains of maize produce a powerful natural insecticide. The insecticide occurs throughout the plant, including its pollen. Maize pollen is dispersed by the wind and frequently blows onto milkweed plants that grow near maize fields. Caterpillars of monarch butterflies feed exclusively on milkweed leaves. When these caterpillars are fed milkweed leaves dusted with pollen from modified maize plants, they die. Therefore, by using genetically modified
maize, farmers put monarch butterflies at risk.

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

A. Whether the natural insecticide is as effective against maize-eating insects as commercial insecticides typically used on maize are
B. Whether the pollen of genetically modified maize contains as much insecticide as other parts of these plants
C. Whether monarch butterfly caterpillars are actively feeding during the part of the growing season when maize is releasing pollen
D. Whether insects that feed on genetically modified maize plants are likely to be killed by insecticide from the plant’s pollen
E. Whether any maize-eating insects compete with monarch caterpillars for the leaves of milkweed plants growing near maize fields.

我的解答：

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