Haiku
A haiku is a short, three line poem with the first line with 5 syllables, the second with 7, the last with 5. It has not rhyme scheme and it usually is about nature. It can also have a kigo (a seasonal reference).
The kigo is this poem is the word snowy - it refers to winter. Also it is important to note that while the English version of the poem does not have the correct syllables, the poem was not originally written in English. It was written in Japanese. Sometimes the syllables get lost in translation.
I would say the tone of this sentence is formal.
The word raga means "a pattern of notes having characteristic intervals, rhythms, and embellishments, used as a basis for improvisation". Based on this definition, the word connects to the structure that Bob Kaufman employs in his poem, "Unanimity Has Been Achieved, Not a Dot Less for Its Accidentalness" though the use of free form and improvisation in the poem.
The answer would be letter A.
These answers do not make sense but if I want to choose one I would say the answer is A be respectful of others.