Why did the author most likely choose this structure for his poem? The varied line lengths provide a steady rhythm. The long-line structure allows Whitman to include a list. The shorter lines provide Whitman’s background information. The long and short lines create a visual image of waves.
It might be said the "The long-line structure allows Whitman to include a list" (option B). It might be added that the lines are long and dense. What is more, the long- line structure might imitates stream-of.conscious thought.