Final answer:
According to Erik Erikson, the stage of development characterized by the task of intimacy vs. isolation occurs during young adulthood, when individuals seek to build intimate relationships and usually are in their 20s to early 40s.
Step-by-step explanation:
The nurse should understand that according to Erik Erikson, the development task of intimacy vs. isolation occurs during the stage of young adulthood. This stage typically corresponds to an individual's 20s through early 40s. During this period, people are focused on building intimate relationships, both platonic and romantic, and establishing their careers. It is essential that individuals develop a strong sense of self during adolescence before successfully navigating the challenge of forming deep connections with others in young adulthood. Failure to achieve positive relationships at this stage can lead to feelings of loneliness and emotional isolation.