Answer:
C. A principal
Explanation:
A principal will not be directed in the form "tú" (informal) but "usted" (<u>formal</u>).
<h3><em><u>MissSpanish</u></em></h3>
The answer is actually D. Neutral for the first one and C. Indigenous for the second one.
I know these are 100% correct because I just took the quick check. ;)