Which term refers to the subset of lines for a single actor used during rehearsal?

• A. Spine
• B. Script
• C. Prologue
• D. Sides

Answer: (D)

In rehearsal, actors work with sides — a subset of the script that contains only the lines and cues for one character. Sides let an actor focus on their part, practice their dialogue, and know when to enter or respond, without having to read the entire play. They often come with the relevant stage directions and cues that affect that character’s timing and blocking, making it practical for both auditions and rehearsals.

The other terms don’t fit this specific purpose: the full script includes everyone’s lines; a prologue is an opening section of a play; and the spine refers to the main through-line or objective driving the character or story, not a practical excerpt used for rehearsing one actor.