What effect did propaganda posters, such as this one from 1917, have on the war effort in the United States? A. They led young people to question the nation's involvement in the war.

B. They led young people to leave the country to avoid being drafted.

C. They led young people to volunteer to serve in the U. S. armed forces.

D. They led to increased numbers of young men drafted into the U. S. armed forces.