Which concept was not an Enlightenment idea that influenced the founders of the United States of America?

religious freedom

natural rights

the social contract

direct democracy

I believe the answer would be the social contract because in the two years that i've learned about it, i have not heard a single word about social statistics. Natural rights, yes. Slaves, white men, women etc. Religious freedom was exactly what they had basically been fighting for. Democracy was what they had wanted instead of a Monarchy like in England.