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Which of the following most logically completes the argument below?

The expansion of large-scale farming in Africa and Asia has destroyed much of the natural vegetation on which elephants have historically depended, forcing them to turn to cultivated land to satisfy their enormous appetites. As a result, farmers have lost millions of dollars worth of crops annually. Yet even if elephant sanctuaries were created on a widespread basis to guarantee elephants sufficient natural vegetation, the raiding would likely persist, since      

A.    when elephants forage for food, they typically travel in herds.

B.    Foraging elephants have been known to cause substantial damage even to plants that they do not eat.

C.    Some of the land where crops have suffered extensive damage from elephants has been allowed to return to its natural state.

D.    Elephants tend to prefer cultivated crops to wild vegetation as a food source.

E.     Elephant sanctuaries are usually created in areas that are rich in the natural vegetation on which elephants have historically depended.

答案是D。以前讨论过，不过还是觉得B对。主要受以前新闻报导的影响，泰国大象毁庄稼特别厉害，其实它们不怎么吃庄稼。

答案是D。以前讨论过，不过还是觉得B对。主要受以前新闻报导的影响，泰国大象毁庄稼特别厉害，其实它们不怎么吃庄稼。

请NN给解一下惑

请NN给解一下惑

B不是大象入侵菜园子的原因，只是陈述了一个事实。题目要求给出the raiding would likely persist的原因。所以B应该是无关吧。

我刚开始也选择了B，后来认真想了一下，可能是以下原因

1.题目提到，elephant sanctuaries建好后，大象还会对庄稼地产生危害，问原因。b提出，因为大象对自己不吃的植物进行破坏。假设答案B的解释正确，可以推出因为大象不吃庄稼地里的植物，所以才会去破坏。答案b将庄稼地里的植物认为是大象不吃的食物，这与题目是相悖的。因此不对。这样反推比较麻烦。还有另一个思考角度

2.选项中提到的plant过于笼统，并没有限定是cultivated land里的plant。很多plant满足“大象不吃”这一条件，这些plant即存在cultivated land里，又存在elephant sanctuaries里（注意，题目仅说elephant sanctuaries guarantee elephants sufficient natural vegetation，并没说没有大象不吃的东西）。因此，如果elephant sanctuaries也有大象不吃的食物，那么大象吃饱喝足之后，就去破坏elephant sanctuaries好了，干嘛还要继续破坏庄稼地呢？因此，B选项中的plant范围太广，在解释原因的时候，又导致了很多其他问题，不是最佳选项。

其实简单说，B犯的错误就是将概念扩大，其实选项中plant，与题目中的概念不一致。

个人粗见~~~