D. She has seen bias against women in employment, civil rights, and marriage, and as a result she feels that urgent action is necessary.
Explanation:
Elizabeth Stanton was an activist who fought for the rights of women in the 19th century. She has seen prejudice against women in employment, civil rights and marriage, and as a result she decided to fight for women to have the same rights as men and not judged on the basis of their gender, but based on their ability.