Answer:
d. Strength of character.
Step-by-step explanation:
Mary Wollstonecraft was an English feminist, philosopher and writer. Wollstonecraft wrote many texts on the education of women, including a novel, a conduct book, a treatise and a children's book. However, Wollstonecraft is particularly known for her book A Vindication of the Rights of Woman (1792). All of these encouraged women to become educated, to possess strength of character and to act according to reason.