Answer:
Personification.
Explanation:
Personification is when you are giving a nonhuman thing a human characteristic. In this sentence, the jet-black night is the nonhuman thing and it is doing a human thing (staring through the window-pane).
For 1 thing they have to consider the time period the play is written in,for another you MUST think of the audience and wether or not they can understand what the dialogue is talking about