Answer:
C. Informal
Explanation:
Essays/texts that have an Introduction, Body, and Conclusion, are informal essays. The writer wants you to learn about something specific in his writing/essay. The writer in the introduction, wants to introduce you to his essay and what he is writing about. The body wants you to learn about the main facts or stories about it. The conclusion, is, when the writer finishes his writing and concludes it with a glossary, index, quiz, etc.
