Why Might the Self Be Viewed as Unstable During Middle

Why might the self be viewed as unstable during middle childhood?

A) because young adolescents experiment with possible selves in the context of pursuing possible social relationships
B) because children judge themselves to be industrious and successful at meeting the new challenges posed by adults at home or school
C) because the construction of multiple selves and self-possibilities intersects with changing social expectations to engage in different, more mature behavior
D) because the structure of the self-changes during middle childhood