B. It helps readers understand the princess's love for the young man and D. It allows readers to determine how the story might end.
Answer:
if I'm supposed to find a grammar error instead if wether it is whether if not I don't know how to answer
Answer: Fabio's attitude changed because he'd be in the parade.
Explanation: Fabio is excited to be able to participate in the parade. The focus of the question isn't on why he'd be in the parade or how? But on what makes his attitude change. Every other factor mentioned corroborates that he'd be participating in the parade.
Answer: It's ironic because it's irony, and there's an iron in the image.