What does the term second choice mean?

It means you are probably a pretty great person, but it also means you will never feel that way. ... When you are second choice in all of your relationships it means you constantly feel like you are in a competition.

Explanation:

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hello!

according to the passage the most suitable options are two. the first one is "by leading the aef to victory in several key battles" like the battle of saint- mihiel and the battle of cantigny mentioned in the passage you copied here. the second one is "by the aef and allied forces defeat germany" since the passage says that his army destroy the german resistance in the meuse- argonne offensive. and also, "by insisting that the aef operate as an independent force".

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