Which of the following best describes theatrical conventions?

The correct answer emphasizes established techniques or practices in theater, which are vital to understanding how a performance conveys its narrative and engages the audience. Theatrical conventions encompass a wide range of methods, including the use of symbolism, forms of dialogue, staging, and techniques such as breaking the fourth wall or utilizing a narrator, all of which are accepted and understood within the theatrical community. These conventions help both actors and directors communicate the essence of the play and create a shared experience for the audience.

While some other options touch on aspects of theater, they do not capture the broader and more foundational concept of theatrical conventions. For instance, rules for selecting a cast focus on the casting process rather than the ongoing practices used in performance. Guidelines for audience behavior pertain to how audiences should act within a theater, which falls outside the realm of the performance itself and the creative practices of theater production. Similarly, standards for theater venue design address the physical space in which performances occur, rather than the artistic and narrative techniques that are employed during a performance.