Greg is attending a lecture on the principles of management at the local community hall. in the middle of the session, he begins to feel very hungry and wants to leave. however, he realizes that leaving would disrupt the class and perhaps insult the speaker. he decides to wait until the lecture is over and then get a snack. according to freudian psychoanalytic theory on the human mind, greg's mind has a highly developed oral stage id superego projection

The correct answer is superego. 

According to Freud, our personality is comprised of three parts: the id, ego and the superego. The superego refers to a part of our personality that represents our conscience and suppresses desires or urges that are inappropriate or unacceptable. In Greg's instance, his superego effectively enabled him to suppress his hunger urge and wait till the lecture ended, since doing so is more socially acceptable and honorable behavior rather than giving into his urge and leaving the lecture hall to satisfy his hunger.