What is the basic purpose of stage curtains, such as travelers?

The basic purpose of stage curtains, such as travelers, is to separate the audience from the stage area. This physical barrier serves several important functions in a theatrical performance. Primarily, it creates a distinct boundary between the performance space and the audience, enhancing the immersive experience of the show. The curtain can act as a visual and psychological cue that indicates the start and end of a performance or scene. Additionally, it helps to manage audience attention, allowing for smooth transitions between different acts or scenes while also concealing the stage area during setup or changes in the performance.

While stage curtains may also play a role in covering equipment and blocking sound, their primary and most recognizable function is to delineate the performance space from the audience, making option B the correct choice.