Final answer:
The line in the passage where Rio Van Winkles helped others can be categorized as character development.
Step-by-step explanation:
The line in the passage where Rio Van Winkles helped others can be categorized as character development. It shows how Rio Van Winkles has evolved and grown as a character throughout the story by helping others. This can be seen as an important aspect of character development because it highlights Rio's transformation and growth.