According to Daniel Levinson, Adults:​

According to Daniel Levinson, adults:​

A) in their later 30s and early 40s are often looking to make significant changes in their lives, including new jobs, families, and homes.
B) who had not achieved ego identity-a firm sense of who they are and what they stand for-may not be ready to commit themselves to others.
C) go through certain periods of life in which their progress and psychological well-being are shaped by common social and physical demands and crises.
D) who choose to remain celibate or single are not developing normally.