Final answer:
The aulos was the instrument used to accompany the dithyrambs that honored Dionysus.
Step-by-step explanation:
The instrument that was used to accompany the dithyrambs that were sung to honor Dionysus was the Aulos. The aulos is an ancient Greek wind instrument, similar to a double flute, with reed-like mouthpieces. It was often played along with singing and dancing during religious ceremonies and theatrical performances.
Learn more about Instruments used to accompany dithyrambs