请教大全19-15~新见解，盼牛牛拍砖~

ellie78

Over the last century, paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.
Which of the following, if true, would enable the conclusion of the argument to be properly drawn ?
(A) Not every species that lived in a given area is preserved as a fossil.
(B) At least one individual of every true species of triceratops has been discovered as a fossil specimen.
(C) No geographical area ever supports more than three similar species at the same time.
(D) In many species, individuals display quite marked variation.
(E) Differences between fossil specimens of triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.
正选是C

题目不支持将那物种分为16中，因为同一时期同一地点的标本显示有11种该生物。
A削弱了论点--不是所有物种都成为了化石，也就是说还有化石没有记录到的物种，也就是说物种数比11大，于是，16种的分法就有可能是对的。

B每种物种至少有一个个体被化石记录了。加强了标本的正确性，加强了结论。

C没有地域能同时存活三种以上相似的该物种--削弱了标本的正确性，削弱了论点。

D，很多物种的个体与个体之间有很大差异--也就是说11种都可能过多，削弱了论点。

E与其他地域的比较无关。

--鄙人认为应该选B
搜前人讨论贴也没看出个所以然，所以特发新帖盼达人指点~

gzpg

题目文的就是削弱。
“This classification is unjustified, however，，“

看上去是加强题，enable the conclustion， 然而原文的结论是某某做法有问题。。其实是要你加强那个削弱！！