Final answer:
The U.S. mobilized for the Great War through selling liberty bonds, raising income taxes, and initiating conscription.
Step-by-step explanation:
The ways the U.S. mobilized for the Great War were:
- Liberty bonds were sold: The federal government sold liberty bonds to the American public to finance the war effort. This allowed citizens to contribute to the war effort and raise funds for the troops.
- Income taxes were raised: The government raised income taxes, particularly on the wealthy, to generate additional revenue for the war.
- Conscription was initiated: Conscription, or the draft, was implemented to ensure that enough men were available for military service.
Therefore, the correct answer is option D, I, II, IV, and V.