Question

I celebrate myself, and sing myself,
And what I assume you shall assume,
For every atom belonging to me as good belongs to you.

Which statement best explains why Whitman chose the phrase “every atom” for the last line?
to emphasize the seriousness of his words
to suggest attention to detail, heightening trustworthiness
to remind readers to remember the basic makeup of natural objects
to remind readers to embrace a microscopic view of the natural world