Which of these sentences correctly describes the role of an actor in a play?
a.) el actor compra los boletos para la obra de teatro.

b.) el actor prepara la escenografía para la obra de teatro.

c.)el actor ensaya las escenas para la obra de teatro.

d.)el actor prepara la iluminación para la obra de teatro.

An actor (un actor) is someone who performs in plays and movies. So option C) is the sentence that correctly describes the role of an actor in a play because this person rehearses the scenes for the play. He neither buy tickets as option A) states, nor prepare scenarios as option B) states, nor prepare lighting as option D) states.

answer might be "si", would be better if you added answer choices