Answer:
The correct answer is - challenges.
Explanation:
Erikson was a psychoanalyst and theorist who modified the Freud's theory of psychosexual development to psychosocial or psychological development theory.
According to the theory of psychological development theory an individual develops identity and self-awareness throughout life in response to challenges and experiences. He divided the life into 8 stages and experiences and challenges in the response of psychological identity development.
Thus, the correct answer is - challenges.