Answer:
The poetic device being used in the excerpt is:
A. rhyme
Explanation:
We can define rhyme as the repetition of ending sounds in words, especially words that are at the end of poetry lines. Let's use the first lines of the excerpt as an example:
Fairy king, attend and mark:
I do hear the morning lark.
The words "mark" and "lark" sound quite similar, right? That is because they have the same final sounds /ark/, the only difference between them being the first consonant sound of each /m/ and /l/. This is an example of rhyme.
The same happens in the other lines, with the pairs "soon" and "moon", "flight" and "night", and "found" and "ground".
Most accepted determination of whether a piece of information is widely known, particularly if the 'people' concerned are your peers such as fellow students in a class.