The two correct answers present in the stanza are:
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Alliteration - There are repeated consonant sounds, such as the "s" sound in "silly, simpering, sideways sellout," and the "m" sound in "man" and "monstrously."
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Assonance - There are repeated vowel sounds, such as the "o" sound in "nor" and "more."
So, the selected answers are: alliteration and assonance.