Final answer:
The correct answer is (B) Generativity, postconventional, age 50 crisis, which aligns Erikson's, Kohlberg's, and Levinson's theories to the same phase of life, typically occurring around middle adulthood.
Step-by-step explanation:
The group of stages from Erikson, Kohlberg, and Levinson that identify the same phase of life is (B) Generativity, postconventional, age 50 crisis. To break it down, Erikson's stage of generativity vs. stagnation typically occurs during middle adulthood (ages 40-65) and is when adults strive to create or nurture things that will outlast them, often by having children or creating a positive change that benefits other people.
Kohlberg's postconventional level of moral reasoning is the highest stage in his theory of moral development, where an individual's sense of morality is defined in terms of more abstract principles and values. Lastly, Levinson's age 50 transition is a part of his theory of adult development which suggests that adults go through a series of developmental stages that are characterized by crises and transitions, and the age 50 crisis is one such transition.