Final answer:
The correct option to complete the sentence is 'el elevador' which means 'the elevator' in Spanish.
Step-by-step explanation:
The correct answer to complete the sentence is el elevador.
This is because 'el elevador' means 'the elevator' in Spanish, and it is used to go from the first floor to the fourth floor.
Option A 'la conserje' means 'the concierge', Option B 'la habitación' means 'the room', and Option D 'el portero' means 'the doorman'.
Learn more about Spanish vocabulary