For this case we have the following incomplete dialogue in English:
Carlos: Marta, do you ___________ what's happening?
Marta: They protest due to the problems in the economy.
We must fill in the blank with the correct word.
In English the complete question is:
Marta, Do you know what is happening?
The translation of the question into Spanish in Argentina is:
Marta, ¿vos sabés qué está pasando?
Answer:
D. sabés
Carlos: Marta, ¿vos sabés qué está pasando?
Marta: Protestan debido a los problemas en la economía.