Answer:
Received a letter from Macbeth.
Explanation:
William Shakespeare's "Macbeth" revolves around the rise and fall of Macbeth. Through murderous acts and nefarious plans, Macbeth tried to become the king of Scotland, aided by his wife and the knowledge of the three witches who had prophesied his rise and eventual destruction.
In Act 1 scene v, we see Lady Macbeth reading a letter from her husband Macbeth. In it, he told her about the three witches and their prophecy and how it became true for he had just been declared "Thane of Cawdor".
Thus, Lady Macbeth learned about the prophecies from her husband's letter.
