Final answer:
The moral regulator of our behavior according to Freud's psychoanalytical theory is the Superego (C). It represents the internalized societal and ethical standards that influence our sense of right and wrong.
Step-by-step explanation:
According to Freud's psychoanalytical theory, the part of our inner psyche that acts as the moral regulator of our behavior is the Superego (C). The Superego develops through our interactions with others, absorbing the moral and ethical codes of the society around us, and essentially guides us to conform to social norms and principles. It acts as our conscience and strives for perfection, which results in feelings of pride or guilt depending on whether we meet or fall short of its ideals. The Superego is in constant conflict with the Id, which seeks immediate gratification of basic drives and operates on the pleasure principle. The Ego, being the rational aspect of our psyche, attempts to mediate between the desires of the Id and the high standards of the Superego while adhering to the reality principle.