The answer is (b. En Chile las personas se saludan con
un beso en la mejilla.
Yo-voy
ella (and) èl-va
Tú-vas
nosotros-vamos
ellos-van
The answer is C.
because,
the first one is saying that Luisa woke up, the second one is that Luisa is getting up, the third one that Luisa is getting out of the house, and the fourth one that Luisa got to school in time.