Jack is in a store and sees another shopper walk off leaving his wallet behind. Jack picked up the wallet and saw that there was a great deal of cash in it, which he really wanted to keep. However, Jack decided to turn the wallet over to the store clerk instead. According to Freud, Jack was likely influenced by his .

ego

Explanation:

According to Sigmund Freud, the complete adoption of moral standards that a society prescribes is practically unattainable. Due to the instinctive, impulsive side of human nature, man only partially adopts these norms, especially those which are forbidden by certain behaviors. According to Freud, personality is made up of three structures: the id (the center of urge and unconscious impulses), the super-ego (responsible for conscience and moral thinking) and the ego ( the center of consciousness, mediate between instincts and principles imposed by culture and morality). The relationship between them is not static, but very lively, changeable, dynamic.