Walt Whitman is a poet with a strong sense of mission， having decoted all his life to the creation of the “single” poem，（）.

Walt Whitman is a poet with a strong sense of mission， having decoted all his life to the creation of the “single” poem，（）.
A、Chicago
B、My Lost Youth
C、Leaves of Grass
D、A Pact
正确答案：C