Final answer:
George Creel was the leader of America's propaganda campaign against anti-war protestors and draft-dodgers, heading the Committee on Public Information during World War I.
Step-by-step explanation:
The individual who led America's propaganda campaign against anti-war protestors and draft-dodgers was George Creel. Creel was appointed by President Wilson to head the Committee on Public Information (CPI) in April 1917. The CPI launched a comprehensive propaganda machine utilizing artists, speakers, writers, and filmmakers to promote the war effort and encourage all Americans to make sacrifices. Among the CPI's initiatives were the Four Minute Men and campaigns to foster '100 percent Americanism.' The agency also was involved in establishing loyalty leagues and employed advertising techniques to sell the war to the American public.
The answer to the question 'Who led America's propaganda campaign against anti-war protestors and draft-dodgers?' is D. George Creel.
Regarding the control of American dissent against the war effort, one method that was not used was the National Civil Liberties Bureau (C. in the provided options), as this organization actually worked to protect civil liberties and was not a tool of the government to suppress dissent.