Which element of modernist poetry is evident in this excerpt from ' the negro speaks of river' by langston hughes?

i've known rivers:
i've known rivers ancient as the world and older than the
flow of human blood in human veins,

my soul has grown deep like the river,

a, the poem uses variations of meter to affect rhyme,
b. the poem's sentences flow across stanzas
c, the poem's stanza have varying lengths,
d, the poem uses nontraditional syntax and rhyme scheme

D,the poem uses nontraditional syntax and rhyme scheme

Explanation:

Langston Hughes was the most famous poet of the modernist movement "Harlem Renaissance". In his poetry 'The Black Speaks of River' he decided to adopt a free and non-traditional system of syntax and rhyme, characteristic of modernist poetry.

"The Black Artist and the Racial Mountain" (1926) became the Manifesto of the movement "Harlem Renaissance". In 1935, he put on stage the black drama, a violent accusation against the racial system of the South, centered on an alienated character, both in the black and white world.

a. both connotative and denotative.