What poetic form is “My Last Duchess” written in?AFree verseBSonnetCBlank verseDRhyming heroic coupletsAnswer: D. Rhyming heroic couplets Read Explanation: The poem is written in rhyming heroic couplets (AABBCC...), and each line is in iambic pentameter, which is characteristic of many of Browning’s dramatic monologues. Read more in App