What defines age identity?

Age identity is primarily defined as the self-perception of one's age combined with societal perceptions. This means that how individuals see themselves in terms of age—whether they feel young, middle-aged, or old—plays a crucial role in defining their age identity. Additionally, the societal expectations and stereotypes associated with different age groups contribute significantly to how one identifies their age. For example, societal views on aging can influence how individuals perceive their own capabilities, roles, and behaviors relevant to their age group.

The other options do not encompass the concept of age identity as effectively. A person's level of education, while influential in various aspects of identity, does not directly relate to how age is perceived. Age-related physical health reflects actual health conditions rather than a subjective perception of age identity. Lastly, age segregation in workplaces pertains to structural or social practices rather than an individual's self-concept regarding their age. Thus, the chosen answer captures the essence of age identity accurately by considering both self-perception and societal factors.