B. tu piensas
c and d are talking to more than one person
a is talking about one person but it is refering he or she, el o ella
b is for you, tu
People are at the airport. Some are putting luggage away. This airport seems Spanish, or these people are going somewhere spanish. One man is being scanned. An elderly woman is getting her bag checked by security.
Or if you need a Spanish answer..
La gente está en el aeropuerto. Algunos están guardando el equipaje. Este aeropuerto parece español, o esta gente va a un lugar español. Un hombre está siendo escaneado. Una anciana está revisando su bolso por seguridad.
Translation - We select a list and use it to write a short story
