Miguel, as the organizer of the community theatre play, has appointed Andrea as the director. Andrea, being the director, is responsible for overseeing the production of the play, including making creative decisions and guiding the actors in their roles. Emilia, as an actor who has been given the lead role by Andrea, is expected to follow the director's guidance but does not have the authority over production decisions.

Sofia, despite being an actor in the play like Emilia and Oscar, does not have the authority to make final decisions about the play's direction; her role is to perform as directed. The final say on whether to incorporate Sofia's suggestions lies with Andrea, as she is the one in the position of director and responsible for these decisions.

Oscar, as another actor in the play alongside Emilia and Sofia, also does not have the authority to decide on changes to the play's direction. Actors, in general, do not have the power to make unilateral decisions about aspects of the production that are under the purview of the director. Therefore, neither Oscar nor Sofia can make final decisions about changes to the play; it is Andrea who has the final say.
Miguel is organizing a community theatre play. He has appointed Andrea as the director. Oscar, Emilia, and Sofia are actors in the play. Emilia is given the lead role by Andrea. During rehearsals, Sofia continues to question Andrea's direction and makes suggestions for changes. Who has the final say on whether to incorporate Sofia's suggestions, and can Oscar as an actor decide on these changes? Provide a brief response.