11. It takes a play to a mere concept to an actual finished presentation.A. ProducerPlaywrightSet DesignerCostume Designer

It seems you're asking about the roles involved in taking a play from concept to finished presentation. Each of the given options plays a crucial part in the overall production process. Here’s a brief explanation of each role:

1. Producer: The producer is responsible for overseeing the entire production. This includes financing, hiring key staff, and coordinating all aspects of the production to ensure it runs smoothly. They are often the ones bringing the concept to fruition and are pivotal in the decision-making process.

2. Playwright: The playwright is the author of the script. They develop the story, characters, and dialogue, creating the text that will be performed. Their vision is crucial as it forms the foundation upon which the entire play is built.

3. Set Designer: The set designer is responsible for creating the visual environment where the play takes place. They design and construct the physical sets that reflect the tone and context of the story, enhancing the audience's immersion.

4. Costume Designer: The costume designer creates the clothing and overall appearance of the characters. Their work is essential in conveying character traits, time periods, and the overall aesthetic of the play.

In summary, each of these roles is interconnected and critical to turning a concept into a live presentation. The producer mobilizes resources, the playwright provides the narrative, the set designer visualizes the world of the play, and the costume designer adds depth to character representation. Together, they collaboratively uplift the play from paper to performance, ensuring all elements are harmonized for the audience’s experience.