Which of the following statements best describes the effect of the free verse structure in "song of myself"? it reinforces the speaker’s feelings of vigor and spontaneity. it allows the poet to describe scenes in less detail. it slows down the forward progression of the poem. it increases the narrative quality of the poem.

The effect of the free verse structure in "Song of Myself" is "it reinforces the speaker's feelings of vigor and spontaneity". Without the rules of writing a poem, the writer or the poet can freely express himself through words without restrictions. Thus, the answer is the first statement. 

I'm leaning between A and D, but I believe that the prompt is more close to A.

Explanation:

They talk about how the methods they use to teach the art of building a boat are different. They explain this by saying they mostly spend time sweeping and doing other tasks, till thier apprentice gives them a real task.