Do you have the text? If you do, I'm pretty sure I can answer it for you.
Irrelevant Sentences
If a sentence is irrelevant, it means that it has no real bearing on the paragraph as a whole. It might be information that is related by tangent, but it does not have anything specifically to do with the main idea of the paragraph. It is best to avoid irrelevant sentences so that the reader can maintain focus on the topic.
Answer: The archetype of the tragic heroine supports the theme by showing that Boadicea takes her life and prevents her daughters from being harmed by the Romans.
Explanation: Boadicea's warrior archetype leads her to fight the Romans and die if necessary.
