The correct response regarding the United States Army's role in the Meuse-Argonne Offensive is:
U.S. troops fought alongside French troops to break the Hindenburg Line and immobilize the German army.
The Meuse-Argonne Offensive, which took place from September 26 to November 11, 1918, was one of the largest American-led offensives during World War I and aimed to penetrate German defenses and contribute to the final defeat of the German army.