The statement that best analyzes the political role of the U.S. in World War I is:
C. The U.S. had limited political impact, as European nations primarily chose to adopt American peace ideals that were useful to their own goals.
This option accurately reflects the complexity of the U.S. role in the post-war negotiations and the extent to which American ideals were implemented, often modified to fit the interests of European powers rather than being fully adopted as originally intended by the U.S.