"Song of Myself" suggests the idea of self and nature. Waltman suggested that travelers show extension towards the other things in life. Thus, option D is correct.
<h3>What is the main idea of "Song of Myself?"</h3>
"Song of Myself" suggested the relationship between nature and the traveler. The theme is depicted through the expansion of one's ideas and ways to live beyond their created boundaries.
The poet wanted the readers to understand that he wanted to travel the world and even suggested the traveler's journey around, out from their defined boundaries.
Therefore, option D. the expansiveness contributes to the theme.
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