Answer:
The author uses onomatopoeia in the words "Bam, bam, bam".
Step-by-step explanation:
Onomatopoeia is the way words are formed according to the sound that is produced. This means that the words that represent a sound are the same as the exact way it sounds.
This means that the word "bang" or "hiss" or "buzz" are onomatopoeic as they not only represent the sound it makes but also are the spellings for those words. And in the given passage, the author uses onomatopoeia in the words "Bam, bam, bam".
Thus, the author's use of onomatopoeia in the passage is "Bam, bam, bam."