Final answer:
The basic conflict in young adulthood, which is between the ages of 20 to early 40, is known as intimacy versus isolation, where adults seek to form personal connections and establish their careers.
Step-by-step explanation:
The basic conflict faced by young adults, spanning the years from 20 to early 40s, is centered around intimacy versus isolation. This stage in development follows adolescence and is marked by individuals seeking to form deeper connections with others, often through friendships, romantic relationships, and starting families. Failure to navigate this conflict successfully can lead to feelings of loneliness and emotional isolation, which may stem from an underdeveloped sense of self in adolescence. During early adulthood, most people also focus on completing their education, establishing careers, and reaching physical performance peaks. It is a time of significant growth and socialization into new roles within society.