The correct answer is C. abab ccdd
Explanation:
In poetry, the rhyme scheme refers to a general pattern of rhyme or repetition of sounds at the end of each line or verse and that can be identified by marking repeated sounds at the end of verses with the same alphabetical letter (a, b, c, etc.). In this way, lines that rhyme is marked with the same letter and letters follow alphabetical order. This implies in the case of the first stanza presented the scheme would be abab which is shown below
The Pobble who has no toes A
Swam across the Bristol Channel; B
But before he set out he wrapped his nose A
In a piece of scarlet flannel B
In this way, the first and third verse marked with a letter A rhyme as "toes" and "nose" have the same final sound and in the case of the second and fourth verse marked with letter B the repetition of sound occurs in "channel" and "fannel". On the other hand in the case of the second stanza, the rhyme is ccdd as shown below
For his Aunt Jobiska said "No harm C
Can come to his toes if his nose is warm; C
And it's perfectly known that a Pobble's toes D
Are safe,—provided he minds his nose!" D
In this case, the first and second verse marked with letter C rhyme due to the repetition of sounds in "harm" and "warm" and the last two verses marked with letter D also rhyme due to "toes" and "noes". In this way, if you look at the letters marked in each verse according to rhyme you have the ABAB CCDD rhyme scheme in this poem.