Because Stradlater isn't a good writer
What "The Tornado That Changed America" can teach us about our understanding of weather is that weather can change at any time and people have to be prepared to swiftly react based on previous planning.
The answer would be letter c which is the disagreements with parents. It is because people who usually writes multicultural literature are those people who are from an immigrant family. They were able to bring out or tell stories about the conflict happening to one's family, such as disagreements with the siblings or parents in scenarios that could be related.