b. a musician and stage hand's announcing of the performance actors
Explanation:
In Act I, the producer comes in to announce the performance actors and to kick start the drama. It was at the stage, the "Six Characters" walked to the stage door and informed the stage keeper that they wanted to see the producer.
After meeting with the producer, the producer introduces the "Six Characters" as the performance actors.
Luigi Pirandello, the author of Six Characters in Search of an Author had gotten international reputation in the 1920s through his work and this play has been used to widely identify him.
