Many of the americans who opposed united states entry into world war i based their opposition on a tradion established by
1. george washington's farewell address
2. the monroe doctrine
3. the abolishonist movement
4. the open door policy

I think it was the last one.

Definelty the last one. The monroe doctrine basically told people europe not to come into the americas. The ablolitionist movement basically helped abolish slavery and the geroge washingtons farewell address basically told people not to become divided into political groups, dont give people three terms and one other thing that I forgot which clearly makes your answer D