Attached is the document containing the answer you be needing.
The correct option is D.
The governors roles as commander in chief is to take charge and to take control of the state militia. During the American civil war, the governors of the respective states acted as the main controller of the military forces in their states.
The war fell sharply along the lines of President Truman’s Containment policy. It was the countries mission to prevent the further proliferation of Communism by the Soviet Union
