Which of the following is one of the important roles James F. Byrnes played during the 1930s and 1940s?
A. He advised President Roosevelt to cut government spending in order to end the economic depression.
B. He advised President Roosevelt on agricultural issues and the expansion of land grant colleges
C. He advised President Roosevelt on civil rights and helped strengthen the NAACP
D. He advised President Roosevelt on domestic policy and mobilized the war effort