Final answer:
The given stanza uses an ABAB rhyme scheme, where the first and third lines rhyme, as do the second and fourth lines, known as an alternative rhyme.
Step-by-step explanation:
The stanza in question uses a rhyming structure known as alternative rhyme, which can also be referred to as an abab pattern. This means that the first line rhymes with the third line, and the second line rhymes with the fourth. Specifically, in the stanza:
- 'up' (A rhyme)
- 'buttercup' (B rhyme)
- 'head' (A rhyme)
- 'bed' (B rhyme)
Thus, we can see that 'up' rhymes with 'head', and 'buttercup' rhymes with 'bed', forming an ABAB rhyme scheme.