Final answer:
Under President Andrew Johnson's version of Reconstruction, Southern states had to meet several requirements to be readmitted to the Union, but paying reparations to the North was not one of them.
Step-by-step explanation:
Under President Andrew Johnson's version of Reconstruction, Southern states had to meet several requirements to be readmitted to the Union. These included ratifying the Thirteenth Amendment, nullifying their secession ordinances, and repudiating Confederate war debts. However, they were not required to pay reparations to the North. This means that option B, 'Pay reparations to the North,' is the correct answer because it is the one requirement that Southern states did not have to fulfill.