C because it’s the only one that makes any sense
The United States might have been officially neutral, but they made their support for the Allies very clear.
The US loaned weapons and other materials to Britain using FDR's proposed cash-and-carry policy.
They were all slave states that had remained in the Union and this is what Missouri, Kentucky, Maryland and Delaware had in common during the Civil war. The correct option among all the options that are given in the question is the second option. I hope that this is the answer you were looking for and it helped you.
