What is the base assumption of continuity theory? New friends continue the cycle of…

What is the base assumption of continuity theory?
New friends continue the cycle of well-being that comes from companionship.
Older people are happy to pass their roles on to younger people and serve as mentors.
Due to their changing roles, people change their basic habits and personality as they age.
Despite changing roles, people maintain their basic habits and personality as they age.