Answer:
a. cognitive dissonance
Explanation:
Cognitive dissonance: In psychology, the term is defined as the psychological stress or mental discomfort accomplished by an individual who holds two or more than two contradictory ideas, values, and beliefs. It involves a situation in which an individual consists of conflicting beliefs, attitude, or behavior.
Example: George, in the given example, is confused and his behavior is conflicting after buying a car of his own choice.