A survey of entrepreneurs who started companies last year shows that while virtually all did substantial preparatory research and planning, only half used that work to produce a formal business plan. Since, on average, the entrepreneurs without formal plans secured the capital they needed in half the time of those with plans, these survey results indicate that, in general, formal plans did not help the entrepreneurs who produced them to secure the capital they needed.
Which of the following, if true, most seriously weakens the argument?
为什么选C啊? C里面的内容和 文章的结论没什么关系呢!!我选了A!请NN们帮忙解释下,
the entrepreneurs without formal plans +sought and received a much larger proportion of their capital from investors with whom they had a long-standing business relationship(c)------they needed in half the time of those with plans
so the actual factor for the result "they needed in half the time of those with plans"maybe "a much larger proportion of their capital from investors with whom they had a long-standing business relationship"
so you can't say "formal plans did not help the entrepreneurs ",thus weakening the conclusion.
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