D. The play's setting is the aspect that would most likely be the same no matter how the play is adapted. The setting refers to the physical location and surroundings in which the play takes place, such as a specific city or a particular room. While the setting can be described in different ways or portrayed with different visual elements, it remains a constant aspect of the play's story and is not easily changed without fundamentally altering the plot. On the other hand, the time period, themes, and appearance of characters can be adapted or interpreted differently depending on the production or adaptation.