For Congress to declare independence, a majority of delegations would need authorization to vote for independence, and at least one colonial government would need to specifically instruct (or grant permission for) its delegation to propose a declaration of independence in Congress.
In advocating for the League of Nations, Wilson wanted to create a unity between nations in order to avoid the same issues that led to World War I. Unfortunately the US rejected this proposal.
B. authors is the correct answer for this one!
There was no specification, so they could serve as many as they wanted but after teddy Roosevelt served two terms and said that was plenty, they put it in the constitution as two terms or ten years
Hope that helps