Answer:
Katherine should like Amy more
Explanation:
Social identity theory: In psychology, the term "social identity theory" is defined as the phenomenon that recommends an individual's behavior can be changed via an organization if it is capable of modifying his or her self-identity or self-concept's part that is responsible for deriving from the emotional attachment or knowledge of the group.
In the question above, the social identity theory suggests that Katherine should like Amy more.
