Final answer:
Late adulthood is the stage in which individuals strive for individuation and psychological balance by integrating the unconscious with the conscious.
Step-by-step explanation:
In Carl Jung's theory of individuation, the stage in which people strive for the integration of the unconscious with the conscious and psychological balance is late adulthood. In this stage, individuals reflect on their lives and either feel a sense of integrity or despair. Those who achieve a sense of integrity have let go of preconceived notions and patterns that have dominated the earlier part of their lives, allowing for a more balanced and whole sense of self.