Answer:
According to Vaillant, men become "keepers of meaning," or guardians of their culture, in their C) fifties and sixties.
Step-by-step explanation:
Vaillant's theory of adult development is based on the idea that people progress through a series of stages as they age. Each stage is characterized by a different set of tasks and challenges. In the fifties and sixties, men are typically focused on generativity, or the desire to leave a legacy behind. They may do this by mentoring younger people, passing on their knowledge and skills, or working to improve their community.
Vaillant's theory has been criticized for being too simplistic and for not taking into account the diversity of human experience. However, it remains a popular framework for understanding adult development.