Final answer:
In Erik Erikson's theory of psychosocial development, the main task of adolescence is to develop a sense of self and identity.
Step-by-step explanation:
In Erik Erikson's theory of psychosocial development, the main task of adolescence is to develop a sense of self and identity. This stage is known as identity versus role confusion. Adolescents ask questions such as "Who am I?" and "What do I want to do with my life?" They may try on different roles and identities to see what fits them best. Successful adolescents who develop a strong sense of identity are able to stay true to themselves despite challenges and different perspectives from others.