In his poem “song of myself” walt whitman attempted to capture the american identity. according to whitman, who is an american?

The idea of identity is the pivotal theme of the poem “Song of Myself.” Walt Whitman explores the idea of self and his relationship with other human beings, as well as nature and the universe. He is proud of himself and of his nation’s people. According to him, a true American is fair and believes in democracy. A true American is not prejudiced and is open to knowing people from all walks of life and all kinds of experiences. Whitman celebrates himself and America in his poem. He also expresses his love for nature and the universe. A true American, according to Whitman, believes that truth exists everywhere. Whitman is not afraid of death and believes that life does not come to a stop even after death. Instead, the soul goes back to nature, and the remains of the dead grow in the form of vegetation.

i believe it is the first choice (1.)

because the major theme is(“both the wild and civilization have rules.”)

and also as u said,( based on what buck learns within the call of the wild, "both the wild and civilization have rules".this is true of humans within society as well.