Re-read the quote and highlight/bold/circle key points regarding to the question:
"What an (absurd) notion that women have not intellectual and (moral faculties sufficient for anything but domestic concerns.).”
Susan B Anthony uses the word absurd to refer to the belief that women should only be used for domestic concerns. Therefore it is likely that the answer you seek is: A - absurd.
It is also A because Susan B Anthony believes that those beliefs are untrue and unfair, so it would only make sense for it to be A.
However, if I am wrong, I apologize, and if you have any questions, please ask.