Answer :
Onomatopoeia in the word bubble contribute to an eerie mood in the excerpt by comparing the witches' cauldron to a blazing fire
What is an excerpt?
An excerpt refer to words or statement that is extracted from a literary paragraph in a passage or literary work which pass meaningful information.
From the passage, onomatopoeia refer to formation of work that look like the original word suggestion in a passage.
Therefore, Onomatopoeia in the word bubble contribute to an eerie mood in the excerpt by comparing the witches' cauldron to a blazing fire
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