Why would a playwright use dramatic irony? to increase the tension the audience feels
to withhold meaningful details from the audience
to tell the actors how to say their lines
to show a director how a scene should be acted out

To withhold meaningful details from the audience

Explanation:

By allowing the audience to know important facts ahead of the leading characters, dramatic irony puts the audience and readers above the characters, and also encourages them to anticipate, hope, and fear the moment when a character would learn the truth behind events and situations of the story.

to and without are prepositions, so a, b, and d are prepositional phrases. the adverb phrase is c, about the surprise.

explanation:

answer: b

explanation: i have never watched or read about him but looked it up and it seems the most sensible answer. sorry if it's wrong. ☺