Answer:
separation anxiety
Explanation:
Separation anxiety: In psychology, the term "separation anxiety" is described as the tendency of an individual to experience excessive worry or fear related to separation from the person whom he or she is attached to or home.
Separation anxiety is considered as one of the normal stages in a child's development because it helps different children to comprehend specific relationships and therefore masters the environment to which he or she belongs to.
In the question above, Yong Park is probably experiencing separation anxiety.
