Final answer:
The moral philosophy that bases the morality of actions on fairness and impartial rules is Rule deontology, which follows Kant's concept of categorical imperatives.
Step-by-step explanation:
The moral philosophy that evaluates the morality of an action based on equity, fairness, and impartiality, with rules serving as guidelines in the decision-making process, is c. Rule deontology. Rule deontological ethics focus on the adherence to moral rules, suggesting that an action is considered morally right if it aligns with a set of just principles, regardless of the outcome. This perspective is strongly associated with the ideas of Immanuel Kant, who introduced the concept of categorical imperatives as rules that any rational being should accept because they are norms of rational conduct or agency.