qualify是什莫意思

dandan74

一道主题提，不是很理解答案的意思：
请问qualify是什莫意思？
In the third paragraph of the passage, the author is primarily concerned with
(A) presenting conflicting explanations for a phenomenon
(B) suggesting a field for possible future research
(C) qualifying a previously expressed point of view
(D) providing an answer to a theoretical question
(E) attacking the assumptions that underlie a set of beliefs

Venus

修正

dandan74

Thanks!