.... eltern leben in Rom.
D
Correct answer
Explanation
In German, possessive articles change based on the gender of the noun they modify. 'Eltern' (parents) is plural, which requires the possessive article 'Seine' (his) when referring to a male subject. 'Mein' means 'my', 'Dein' means 'your', and 'Seine' means 'his' for plural nouns. The sentence translates to 'His parents live in Rome.'