Final answer:
The poem 'The Pest' uses internal, end, and slant rhymes with the short 'e' vowel sound creating the rhyme pattern.
Step-by-step explanation:
The poem The Pest showcases different types of rhymes, including internal rhyme, end rhyme, and slant rhyme. For example, the words 'mean' and 'keen' demonstrate internal rhyme because they rhyme within a line. The words 'mess' and 'less,' as well as 'sleep' and 'creep,' exemplify end rhyme as they rhyme at the end of lines. Moreover, 'around' and 'bad breath' are examples of slant rhyme, which is less exact but still creates an echoing sound. The vowel sound that helps create the pattern of sound in this poem is primarily the short 'e' sound.