I would say Dominican Republic only because I am Dominican and my parents call my room a dormitorio, a dorm. I’m not sure how the passage can make it clear where he lives though..
<span>Ana cocina un pastel y unas galletas. Ana_________ cocina.
the answer is ''</span><span>las''</span>
True :) because it is a straight up fact that every time a verb is a reflexive, it ends in “se”