Answer:
A.
Step-by-step explanation:
The Land Grant College Act, also known as the Morrill Act, was enacted in 1862 for the purpose described in option A:
A. to help states teach agriculture and mechanical arts.
The Morrill Act provided federal land to the states for the establishment of colleges that would focus on agriculture, mechanical arts, and other practical subjects, with the goal of expanding educational opportunities and promoting economic and industrial development in the United States.