Answer:
scrim, cyclorama
Step-by-step explanation:
Mason, a set designer, is preparing a set for a production of the play, Hamlet. In one scene, he needs to show the ghost of Hamlet’s father appearing for a while, and then disappearing. For this scene, he could use a scrim. In another scene, he needs to show a dark, cloudy sky in the background. For this scene, he could use a cyclorama.