I believe the correct answer is a plea for better education for women.
Mary Wollstonecraft’s “The Vindication of the Rights of Woman” had for the main purpose to convince the readers to accept her point of view – that women’s weakness was artificial and the education should be the same for both men and women. She believed that women’s minds were “flowers planted in soil that is too rich” and that they had no weaknesses compared to men, so this essay might be subtitled as a plea for the better education for women.