Answer:
D. Rhyme scheme
Step-by-step explanation:
Rhyme scheme refers to the patterns of rhyme at the end of lines or stanzas in a poem. Rhyme scheme is the order in which the words at the end rhyme, and it is usually represented with the letters "a,b". The most common types of rhyme schemes are: Ballad, monorhyme, triplet, couplet, alternate rhyme and enclosed rhyme.