Final answer:
The French Symbolists created the poetic technique of Free Verse, which is now the dominant form of contemporary poetry. Free verse does not require poets to follow any prescribed rules of form, such as rhyme or meter.
Step-by-step explanation:
The poetic technique that the French Symbolists created and is now the dominant form of contemporary poetry is Free Verse. Free verse is a form of poetry that does not require the poet to follow any prescribed rules of form, such as rhyme or meter. It allows poets to express themselves more freely and experiment with different styles and structures.
A well-known example of free verse poetry is Walt Whitman's Leaves of Grass. Whitman's poetry helped establish free verse's potential for exploring a broad range of topics and its ability to embrace various ways of organizing verse lines.