The rhyme scheme of the poem you provided can be analyzed by examining the end words of each line:
- He sat upon his brand new bike (a)
- Waiting for his best friend Mike (a)
- He couldn’t wait to ride to school (b)
- Others would say his bike is cool (b)
So the rhyme scheme for this poem is a a b b.
The correct response from your options is: a a b b.