15. In which type of writing would an interjection be most appropriate? A. Formal writing
B. Narrative writing
C. Business writing
D. Persuasive writing

I believe narrative writing would be the most appropriate.

Explanation:

You will rarely see any interjections in formal writing.

Interjections are words or phrases that are used to express something from a person.  

For instance:

Holy cow!

Persuasive writing is used an argumentative style, so you wouldn't be using this kind of language.

Business writing also requires you to be formal.

I hope this helps!

B

Explanation: