The answers are correct for your prefixes.
I can't answer without knowing the following.
Answer:
For me, the best sentence that describe the term stage directions is, the C. They are instructions for how the actors should deliver a line or move on stage.
Explanation:
Because, the satge directions is the way to teach the actors how to move on the stage or the show. Is a kind of direction to say what line they have to continue and learn to be actors on the scene.
Answer:
no sorry. dont even know the book.
