Final answer:
The stage experienced in adolescence according to Erik Erikson is 'Identity vs. Role Confusion,' where individuals work on establishing their personal identity and direction in life.
Step-by-step explanation:
According to Erik Erikson's theory of psychosocial development, the developmental stage experienced by an individual during adolescence is b. Identity vs. Role Confusion. During this stage, typically between the ages of 12 and 18, adolescents are primarily concerned with developing a sense of self. They explore various roles and ideas, asking questions such as "Who am I?" and "What do I want to do with my life?" This period is marked by significant personal growth, where success leads to a strong identity, and failure can result in confusion about one's role in society.