Which action taken by president washington would have been supported by the federalists but not by the democratic-republic. a)the formation b) the passage of the alien and sedition acts c)the proclamation of neutrality d)the creation of the national bank

Not B, alien and sedition acts were Federalist but passed by Adams
Not A unless you typed it wrong, "the formation" doesn't mean anything.
Could be C, but most federalists didn't support a proclamation of neutrality, that was mostly a Washington thing.
Meaning it's most likely D, as a National Bank was a federalist ideal. I would choose D.