详解
Choice B is the best answer. In lines 16-23("it...hard"), Stanton provides evidence for the claim that society's acknowledgement of "womanhood," or women's true character, is a fairly recent historical development: "[womanhood] has scarce been recognized as a power until within the last century."
Choices A, C, and D are incorrect because they do not provide the best evidence that society's acknowledgement of "womanhood," or women's true character, is a fairly recent historical development. Rather, choices A, C, and D discuss men's character, power, and influence.