Answer:
rationalization
Explanation:
Rationalization: The term rationalization is given by Sigmund Freud in his psychoanalytic theory and is considered to be one of the types of defense mechanisms. The term rationalization also referred to as making excuses.
While using rationalization, a person tends to avoid guilt related events and maintains self-respect and dignity. A person tries to explain his or her controversial feelings or behaviors into a logical or rational manner to neglect the exact true explanation.
In the question above, Chad's explanation best illustrates the defense mechanism of rationalization.