Answer:
Explanation:
Let's see every answer choice. All those words can be used when you travel by train.
a. Asiento - ocupado
Asiento is seat, and ocupado means taken. Then asiento - ocupado may perfectly go together in a sentence: el asiento está ocupado means the seat is taken.
b. Revisor - boleto
Boleto is ticket and revisor is the person who checks the ticket (in British that may be named inspector), then those two words go together in a sentence.
c. Horario - vía
Horario means schedule and vía means the railway, then those two items are not related as the other pairs are.
d. Sencillo - ida y vuelta.
Sencillo is referred to a single or one way ticket and ida y vuelta means a roud trip or two way ticket. Quisiera un boleto sencillo o de ida y vuelta? means Do you like an single or a round trip ticket?
