Answer:
They emphasize differences.
Step-by-step explanation:
The word "various" refers to the meaning of variety, while the word "dissonant" refers to the meaning of difference and inequality. These two words as used in the poem shown above, show how the lyres presented different chords and sounds, with variety and the ability to cause different, unpredictable and completely different effects.
With that, we can say that the correct answer to your question is "They emphasize differences."