Answer:
Continuity theory
Explanation:
Continuity theory is the theory about normal aging. In this theory, older people maintain their activity daily in their older age the same as they maintain their work as when they were young. The older according to this theory maintain their lifestyle in the same manner as by using their past strategies. This is a major psycho-social theory that described how a person would maintain in their old age. Along-with this theory their comes other psycho-social theory that is activity theory and disengagement theory. The disengagement theory is the odd theory of continuity theory and activity theory further describes the continuity theory.