Answer:
d. deindividuation.
Explanation:
Deindividuation: In social psychology, the term deindividuation is defined as the mislaying of an individual's self-awareness in a particular group. It signifies an individual's characteristics across a crowd. It is often considered as a psychological state that consists of low or decreased self-evaluation and causes dis-inhibited and anti-normative behavior.
Example: Cults, gangs, etc.
In the question above, June's behavior refers to the deindividuation.