The moral principles that determine how a person behaves or conducts themselves is referred to as:

The term that best describes the moral principles that guide a person's behavior is "ethics." Ethics encompasses the systematic study of what is right and wrong, influencing how individuals make decisions and live their lives according to moral standards. It serves as a framework for evaluating actions and guiding conduct in various situations, making it essential for understanding behavior in both personal and professional contexts.

While "morality" often refers to the standards by which individuals judge what is right and wrong, it is more about the actual beliefs held by a person or society rather than the overall framework that ethics provides. "Integrity" relates more specifically to the consistency of actions, values, methods, measures, and principles within a person, while "conduct" pertains to the actual behavior exhibited by an individual but does not encapsulate the guiding principles themselves. Therefore, ethics is the most accurate term for describing the moral principles that influence behavior.