Answer:
The correct answer is proscenium stage.
Explanation:
The proscenium stage is a type of scenario whose structure frames everything that happens in a play.
Its shape is usually square or arched and is currently called "fourth wall" as it is responsible for dividing the stage from the public. It is like an invisible barrier from which the public observes what happens.
It uses a large amount of scenery and machinery to put it into operation and its disadvantage is that it makes it difficult to create an aesthetic and balanced image since due to its shape, those who attend the play can be closer or farther from the stage.
