The correct option is C A beautiful black bird flew along the big bumpy road,
Which rushed and ran towards the river that flowed.
The correct answer is 'A beautiful black bird flew along the big bumpy road, Which rushed and ran towards the river that flowed.' because most of the words in the first part of this poem begin with the /b/ sound, while three words in the last line begin with the /r/ sound. Since this poem focuses on repeating the /b/ sound and then the /r/ sound, it uses alliteration.