Answer:
In a bildungsroman story, a character can go through many transformations, but the most common is the change of maturity, as this character can undergo some experience that forces him to mature quickly and many times before his time.
Step-by-step explanation:
Bildungsroman is a literary concept that allows a novel to present characters who are involved in situations that focus on the psychological and moral growth of each one. These characters will undergo psychological modifications during each experience they engage in and it is likely that they will go from a low maturity stage to a high maturity and mental growth stage, where they become completely different individuals.