Final answer:
A prepared individual has successfully developed a strong sense of self during adolescence and is ready for the new roles and responsibilities of adulthood, including personal, family, and career commitments.
Step-by-step explanation:
An individual who is prepared to function first as a young person and then as an adult is one who has successfully navigated the complex process of socialization. During adolescence, the main task is developing a sense of self, which involves exploring different identities and roles within society. A prepared individual has a strong sense of self and is able to remain true to their beliefs and values amidst external pressures. This ability is crucial as they transition into adulthood, where societal expectations shift towards responsibility and commitment. In this stage, adults take on new roles that may include entering into marriage, starting families, and pursuing careers. They also plan for the future through anticipatory socialization, which involves preparing for upcoming transitions and roles, such as retirement planning and healthcare. Ultimately, a prepared person is one who is ready to assume the responsibilities and fulfill the expectations of adult life, which legally begins at the age of majority, usually 18 years old in many societies.