The correct answer is option d) It gave land to the states to build colleges.
Officially kown as Land-Grant College Act of 1862 or the Morrill Act was a Congress Act passed in 1862 which gave public land grants to States in order to build new colleges and Universities.
At the time, the United States had a handful of schools of higher education and this was seen as a way to simultaneously build universites all over the country and improve the overall skill level in the country.