Answer:
El is the answer since chico is just one person. And it has o for masculine.
Answer:
Estos profesionales son mejores que aquellos.
La eparación de la lavadora es más costosa que la de la secadora.
Explanation:
Estos profesionales son mejores que aquellos.= you are comparing professionals, saying these ones are better than the other ones.
La eparación de la lavadora es más costosa que la de la secadora.= you are comparing the repair from the washer to the dryer.
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..