Final answer:
The subject of this question is Spanish. The appropriate option to complete the sentence is 'rentaron una casa de campo' which means 'they rented a country house'.
Step-by-step explanation:
The subject of this question is Spanish. The question is asking you to choose the correct option to complete the sentence. In this case, the correct option would be 'rentaron una casa de campo' which means 'they rented a country house'.
Options 'una llave' means 'a key', 'un elevador' means 'an elevator', and 'un servicio de habitación' means 'room service'. These options are not relevant in the context of renting a house for a family vacation.
Learn more about Completing a sentence in Spanish