A.) Dream memories and fall leaves are being compared in the simile.
Thunder and lightning crash above a Scottish moor. Three haggard old women, the witches, appear out of the storm. In eerie, chanting tones, they make plans to meet again upon the heath, after the battle, to confront Macbeth. As quickly as they arrive, they disappear.
hope this helps :)
Answer: The anwser is D: supporting detail. Your welcome