Final answer:
Defining adulthood is complex and involves transitioning from adolescence to a stage before old age. Two criteria that define adulthood are legal responsibilities and maturity and independence.
Step-by-step explanation:
Defining adulthood is complex as it involves transitioning from adolescence to a stage before old age. Assigning specific ages for the beginning and end of adulthood is difficult because it varies based on legal, social, and cultural factors. However, adulthood can generally be defined as the life stage between adolescence and death.
Two criteria that define what it means to be an adult are:
- Legal responsibilities: Attaining certain legal rights and responsibilities, such as voting, joining the armed forces, and taking on legal and financial responsibilities. The age at which these rights and responsibilities are granted differs in various countries.
- Maturity and independence: Being physically mature and emotionally developed, capable of making independent decisions, taking responsibility for one's actions, and demonstrating a sense of self-reliance.