The passage is adapted from Virginia Woolf, Three Guineas. It talks about the situation of women in English society. The writer has highlighted the urgency of the issue which is the procession of the sons of educated men.
The passage highlights the question that why women are prohibited from doing professional work, why they are seeing the men going to the office behind the curtained windows.
The previous question explains that the procession describes in the passage has become less exclusionary in its membership in recent years.
The evidence for this lies in line 23-24 which says 'But now, for the past twenty years or so, it is no longer a sight merely, a photograph, or fresco scrawled upon the walls of time, at which we can look with merely an esthetic appreciation. For there, trapesing along at the tail end of the procession, we go ourselves'.
Thus, option C is the correct answer.