Answer choice B is incorrect because this is not implied by Gilman's views as described in the passage. We know that Gilman believes that "the principles of change that determine the development of organisms have brought humans to the point where it is possible for us to contribute consciously to the evolutionary process" (lines 26 to 29). Answer choice B says that social evolution is no longer possible except through conscious action. Gilman simply believes that conscious action can possibly lead to social evolution, not that conscious action is the only way for society to evolve.
Answer choice A is correct because it is supported by lines 46 to 56 which are interspersed in the answer choice as written below:
"Some social conditions [gender-specific work roles and hierarchical relationships] on which social evolution depends at certain times in human history [at one time such arrangements were necessary for evolution because what she felt were male traits...were essential for the development of a complex society] are detrimental to further social evolution at other times in history [future progress...now required the restoration of a balance that would include what she saw as female qualities]."
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