The sentence from the text that best expresses the author's opinion of conditions affecting women at the time is: "The suffrage movement grew out of centuries of shameful and unfair treatment of women."
What does the sentence show
This sentence conveys the author's perspective that the suffrage movement emerged as a response to the long-standing history of unjust and disgraceful treatment of women over many centuries.
It indicates the author's critical view of the historical mistreatment and inequality faced by women, serving as the impetus for the women's suffrage movement.