I think the answer might be D but idk if it can be C
Answer:
O calmed
Explanation:
<em>If you need an explanation please let me know</em>
<em>~Thank you have a nice day/night~</em>
<em>~Evelyn~</em>
"Please talk quietly in the library."
Imperative because it gives a command or request.
Hope I was able to help! :)