Have you tried reading your textbook or googling? I'm not really sure what part you don't understand. His theory is about how young adults figure out who they are, they experience several stages before figuring out who they are and what they like. So the question probably wants you to discuss the process of obtaining your identity according to James Marcia.
Get Matched With a Therapist If you would like real online counseling from trained, Licensed, and Certified Professionals, visit our Therapists section to take a questionnaire and be matched with a counselor that's right for you.