Reentry occurs when a person leaves his or her social system

Reentry occurs when a person leaves his or her social system for a period of time and then returns. Which situation below best describes Reentry?

1. When he is offered a better paying position, Jacob leaves the restaurant he manages to manage a new restaurant on the other side of town.
2. Catherine is spending her junior year of college studying abroad in France.
3. Malcolm is readjusting to civilian life after two years of overseas military service.
4. After several miserable months, Sharon decides that she can no longer share an apartment with her roommate Hilary.

Malcolm is the only person returning to a social system that he has been away from for an extended period of time.