This is the 17738th most frequent Polish word.
zobaczą
"They will see."
The word 'zobaczą' is used as a verb in the future tense, meaning 'they will see'.
Gdy wrócą, zobaczą piękny zachód słońca.
When they return, they will see a beautiful sunset.
Here, 'zobaczą' appears in a question, asking about what will be observed in the future by 'them'.
Co myślisz, że najpierw zobaczą w muzeum?
What do you think they will see first in the museum?
In this conditional sentence, 'zobaczą' expresses the resulting action 'they will see' if the condition is met.