Where is Javier from? Where does he live? When doesn't Javier swim? Where does Javier go on Mondays? What does Javier study? Where does Javier go after his classes?where do Javier and his friends go on Saturdays? What does Javier see in the museum?
The answer is sono. Because sonar means sound and it would only makes sense if it’s sono.
“Son las “ is used to say “the time is “ and el la is incorrect