Final answer:
4) He is willing to go to great efforts to make himself the common element connecting these people.
Walt Whitman's poetry, especially in 'Song of Myself,' shows his willingness to connect with and celebrate the common people, making him the uniting common element in his portrayal of American life.
Step-by-step explanation:
Walt Whitman's attitude toward the American lives he aims to represent in his poetry is one of deep connection and celebration. Option 4, which states that he is willing to go to great efforts to make himself the common element connecting these people, best describes his perspective. In Leaves of Grass, particularly "Song of Myself," Whitman exhibits a deep bond with the common people and everyday experiences, and his work transcends traditional distinctions between high and low culture. He sees himself as part of the fabric of America, celebrating its diversity and shared humanity. Whitman expresses pride in the collective identity and individualism of Americans, making him a champion of both the great and the common through his unique use of language.