Final answer:
A c) moral imperative is the internal rule or principle that compels a person to act in a certain way, based on Kant's theory of the categorical imperative.
Step-by-step explanation:
The rule or principle originating in a person's mind that forces the person to act in a certain manner is called a c. Moral imperative. This concept aligns with the Enlightenment philosopher Immanuel Kant, who articulated the idea that moral laws, or maxims, are accessible through reason regardless of one's religion or culture.
Kant posited that rational beings inherently form general principles or maxims which guide their actions, and these can be understood via the categorical imperative, a notion suggesting that an action is only moral if it can be universalized, or applied as a universal law.