Correct answer choice is :
D) She founded the first all-girls high school in the US.
Step-by-step explanation:
Emma Hart Willard was an American women's rights activist who devoted her life to education. She served in many schools and established the first school for women's higher education, the Troy Female Seminary in Troy, New York. Emma Hart Willard founded the Troy Female Seminary. It was the first school in the United States where girls could study in ways that were before reserved for men. Willard first set up the school in Waterford, New York, and had changed with representatives to get funding, just like other schools.