What is an example of a theatrical convention?

Breaking the fourth wall is a significant example of a theatrical convention because it represents a stylistic or theatrical device that acknowledges the audience's presence while blurring the boundary between the performance and reality. This convention allows characters within a play to directly address the audience, creating an interactive experience that can enhance engagement and provoke thought on the nature of performance itself.

This technique has been used effectively in various forms of theater, from classical works to contemporary performances, and serves to redefine the relationship between the actor and the audience. By directly communicating with the audience, playwrights can infuse a play with humor, irony, or critical commentary, making this convention a powerful tool for storytelling.

While the other choices involve elements that can enhance a theatrical production, they do not specifically denote conventions in the same way. Multimedia elements and live music can complement a performance but do not inherently change the framework of how a story is told in theater. Casting based on star power may influence audience draw and marketing but does not pertain to the conventions that define the structure and style of the theatrical experience itself.