Final answer:
The ending of adolescence varies because adulthood is defined differently across societies and is influenced by legal, cultural, and personal factors, making the statement True.
Step-by-step explanation:
The statement 'The ending of adolescence is varied because people become adults at different times depending on their society' is True. Adulthood is a concept that is socially defined and legally regulated, with varying criteria across different cultures and legal systems. In the U.S., for instance, adulthood legally begins at 18, but other factors like economic independence, social roles, and personal maturity levels also play a role in defining when adolescence truly ends. Moreover, generational perspectives, as shown by Millennials, further complicate the definition, with different views on when adulthood starts and old age begins. Thus, the transition to adulthood is not universally fixed and changes with societal norms and personal development.