4. Which of the following best explains how the poem's form develops its message?
A The poem is written as a lyric poem, echoing its
comparison of language to singing and thus contributing
to its message regarding the beauty of language.
B The poem is written in free verse, a modern style,
contributing to the poem's message about social progress
C The poem is written in free verse, echoing the poem's
message about changing language and structure,
D The poem is written in free verse, which flows naturally
like the river or the wind; it therefore contributes to its
message about preserving nature.