[求助]这道逻辑题大牛给解释解释？

下面这道逻辑题目，我看了答案还是不懂，大牛帮帮忙,解释解释怎么整这种题？

18.in interviews with jurors inquiring how they arrived at their verdicts, researchers found that 40% of the references jourors made were to factors that had not been included in courtroom testimony. to improve the jury system, the researchers suggested that judges give instructions to the jury at the beginning of a trial rather than at the end. they argued that this would permit jurors to concentrate on the most relevant evidence rather than filling in gaps with their own assumptions, which have little to do with the legality of a case.

question: the answer to which of the following questions is LEAST directly relevant to evaluating the researchers' suggestion above?

A. is it possible for a judge to instruct a jury at the end of a trial in such a way that jurors will disregard any irrelevant factors that had been using to weigh the evidence?

B.will a jury that hears a judge's instruction at the beginning of a trial be able to weigh the evidence accordingly once that evidence has actualy been presented?

C.will having judges give instructions at the beginning of a trial rather than at the end significantly alter the customary procedures employed by the judicial system?

D. when jurors are queried as to how they arrived at their verdicts, does their interpretation of their decision-making process include many references to factors that were not, in fact, influential?

E. if jurors hear the judge's instructions at the beginning of a trial, what percetage of the factors that influence their decisions will be matters that were not presented in the evidence?  

应该是C吧。

原文的意思是：研究发现，在评审案子的过程中，陪审团的成员经常会按照自己的思维来断案，而忽视了很多证词。因此，研究者建议，在开庭审案以前，给这些陪审团成员做一个指导，让他们熟悉证词，以尽量避免以他们自己的常识来断案，从而导致断案的不公正性。

评价，C说，法庭在开庭之前给予陪审团员指导的做法是否会改变法院系统的既定流程。因为是否改变流程对证词的公正性以及断案的正确性无关，因此此条最弱。其他选项都提到陪审团是否会接受证词，是否会影响他们断案等等，都与结论有关。

How about D?

多谢关中汉子的上文解释。文章问的问题是，下面那一项对研究者的建议（应该在审案开始的时候对她们进行辅导，而不是在结束的时候进行辅导） 带来最小的影响？

答案C的意思是给陪审团成员进行案前辅导是否会改变审案流程？显然，可能会改变，如果改变了，就是一种情况，而不改变可能是另外一种情况，它应该会影响到研究者的建议是否能够能接受的问题。

是否是我想的太多了。

GMAT Premier Programe 2008-2009给出的答案是C,我总是感觉不踏实。

我刚开始复习，考试的时间又很短，能否建议以下快速提高成绩的办法？

关中汉子你也在准备吗？

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