Final answer:
Bobbie is developing autonomy, aligning with Erikson's critical developmental stage in adolescence of identity versus role confusion.
Step-by-step explanation:
Seventeen-year-old Bobbie, who strives to rely on herself and not on her parents for decision making, is developing autonomy. Autonomy is a key developmental stage in adolescence, where teens work towards becoming independent and forming their own system of moral and ethical values. This aligns with Erikson's theory of psychosocial development, as he identifies the main task for adolescents as one of identity versus role confusion, emphasizing the importance for youths to discover their personal identity and sense of self.