1. horace mann

a. worked closely with Elizabeth Cady Stanton.
b. set up the Seneca Falls convention wiht lucretia mott
c. was arrested for trying to vote. campaigned for women's suffrage
d. extended the school year and raised teachers' pay in massachusetts
e. helped persuade state legislators to fund mental hospitals.
f. hounded legislators to provide more money for education
g. contributed the declaration of sentiments to the seneca falls convention
h. worked to reform prisons

The answer is d. extended the school year and raised teachers' pay in Massachusetts. Horace Mann is known as the "father of American education" for his advocacy of public education and his work as an educational reformer in the mid-19th century. He worked to establish a state board of education, extend the school year, improve teacher training, and raise teachers' salaries in Massachusetts.