9.

What are the Janus masks?

the international symbol for drama

a type of stage direction determined by the director

the international symbol for comedy

a type of stage mask worn by dramatic actors when performing tragedies

Janus masks are not specifically a type of stage mask worn by dramatic actors when performing tragedies.

The correct answer is:
Janus masks are the international symbol for drama. Janus was a Roman god with two faces, one looking to the past and the other to the future. He symbolizes the dual nature of theater, with one face representing tragedy and the other representing comedy. The masks are often depicted as two faces back to back, one smiling and one frowning, representing the contrasting emotions present in dramatic performances.