It is necessary because if you don't have a confirmed opinion with textual evidence to back it up you wont have a good argument.
A theme is a central topic,subject,or message within a narrative.
Answer:
You didn't give enough information
Explanation:
You need to add the reading or a picture of it, and you need to show us the different answers, otherwise only people who have taken the quiz/test can give you the answer.
The correct answer among all the other choices is "The tone of work of fiction or nonfiction is influenced by sentence and word choice." Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.