Answer:
The quality one would expect a book listed as "expository text" to have is C. Fact-based information on a subject.
Step-by-step explanation:
An expository text is a nonfiction or informational text aimed basically at educating its reader. Therefore, the expository text will try to get to a point efficiently, by using clear, factual and concise information. This is why C. fact-based information on a subject is what one would expect an expository text to have.