Which of the following symbols in the tragedy of macbeth, act ii, scene ii, signals that the murder has been accomplished? a. the knocking at the south entry b. the words spoken by malcolm and donalbain c. the owl’s scream and the crickets’ cries d. the voice macbeth hears

The right answer is " c. the owl’s scream and the crickets’ cries".

Here is the part of the macbeth tragedy that proves the above

"MACBETH I performed the act (murder). Did you hear any noise?

LADY MACBETH The owl, just the owl, and the cry of the cricket. Have you not spoken?"

yes, they are. i think.