It’s d. Vocative
The complete declination is:
Singular
Nom dominus
Gen domini
Dat domino
Acc dominum
Voc domine
Abl domino
Plural
Nom domini
Gen dominorum
Dat dominis
Acc dominos
Voc domini
Abl dominis
The pronouns shift from “his” to “she”.
Whatever you want them to be
In what country do people speak Mandarin?
And is it a type of Chinese?
This is your answer какие