Answer:
a backdrop of objects that visually represent a physical location in a play --> set
the writer of a play --> playwright
a description of the movement, position, and tone of the actors --> stage directions
Step-by-step explanation:
play·wright
/ˈplāˌrīt/
noun
noun: playwright; plural noun: playwrights
a person who writes plays.
stage set - representation consisting of the scenery and other properties used to identify the location of a dramatic production; "the sets were meticulously authentic" set. mise en scene, stage setting, setting - arrangement of scenery and properties to represent the place where a play or movie is enacted.
stage directions - noun. an instruction written into the script of a play, indicating stage actions, movements of performers, or production requirements.