Final answer:
The developmental tasks of early adulthood (ages 20-45) include establishing a career, forming intimate relationships, and starting a family, thus, the correct answer is 4) All of the above.
Step-by-step explanation:
The developmental tasks of early adulthood, which generally spans the ages of 20 to 45, indeed cover a range of significant life events and milestones. During this crucial phase, individuals are often involved in the completion of higher education and making strides towards establishing a career, which is a fundamental step toward financial independence. Emotional and social development is marked by forming intimate relationships, not only in terms of romantic partnerships but also by nurturing close friendships that can offer support and enrichment throughout adulthood. Simultaneously, many in this age bracket consider starting a family, which often extends to the bearing and raising of children. Therefore, the correct response to the student's question about the developmental tasks of early adulthood would be 4) All of the above.