Read these passages:
MACBETH. Stars, hide your fires
Let not light see my black and deep desires.
-William Shakespeare, Macbeth, Act I, scene iv
LADY MACBETH. Come, thick night,
And pall thee in the dunnest smoke of hell,
That my keen knife see not the wound it makes.
-William Shakespeare, Macbeth, Act I, scene v
Macbeth and Lady Macbeth both set a(n).
darkness.
O A. angry
B. dreamy
O C. uncertain
D frightening
tone by invoking