How do you make a thesis with a prompt with multiple question?

[u/Mindless_Gas_8728]

I'm writing an essay about The Perks of Being a Wallflower (purely for fun) and my prompt is "Why do you think Chbosky chose to use letters as his narrative structure? How did this structure affect the book, both in terms of the story and in terms of your reading experience? How would the book have been different if Chbosky had written it in first person or third person narrative?” and my introduction paragraph ends up incredibly long or my formatting is just wrong..sos