The correct answer among all the other choices is "explains a subject by illustration." Exposition is a kind of nonfiction writing which <span>explains a subject by illustration. </span>Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Ignore theme because people are annoying :)
The author used a question-and-answer format to develop the main points of the passage to guide readers' understanding of a complex topic. That is option A.
<h3>What are rhetorical questions?</h3>
Rhetorical questions are those questions that are used by authors in their literature for clarification and not for a direct answer to be given.
From the excerpt, the questions that where asked is an example of rhetorical questions about clock of which the author gave clear answers to.
Therefore the author used a question-and-answer format to develop the main points of the passage to guide readers' understanding of a complex topic.
Learn more about rhetorical questions here:
brainly.com/question/13734134
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