Enlightened. Libel is a published false statement. Separation of powers is delegating government duties into separate bodies (legislative, judicial, executive branches of US govt.). Divine right is the theory that a ruler gets their power from god and therefore cannot be challenged or held responsible for their actions or the consequences of those actions. Reason is a justification or cause for an event. Natural rights are rights that can never be taken away (universal and inalienable). Enlightenment is is a greater knowledge or understanding about something, so it makes the most sense in this situation.