The best option from the list would be that "b) it completely ignored slavery," since the Founding Fathers were very much aware of the hypocrisy of talking about freedom and individual liberty while owning slaves.
It would be in "D. Haiti" that slavery ended with revolution than by government decree, since this was the result of a massive slave uprising that ended up ultimately being successful.
I would pick C but wait for more answers
Harper's Ferry was a ship with a large arsenal.