Final answer:
Marianne Moore's poem 'Poetry' is structured in free verse, the correct option being 'b. free verse'. It exhibits thematic and syntactic development, aligning with Modernist tendencies, and avoids traditional metrical patterns while still incorporating occasional poetic elements. Option b. free verse is the correct answer.
Step-by-step explanation:
Based on the question regarding the structure used by Marianne Moore in her poem Poetry, it is clear that the correct option is b. free verse. In Poetry, Moore elects for a form that does not maintain a regular pattern of meter or rhyme. She utilizes a structure that relies on thematic, syntactic, or semantic repetition and development for coherence, rather than traditional metrical patterns.
The unconventional nature of Moore's free verse aligns well with the Modernist movement, actively challenging traditional forms like the sonnet or rhymed verse. Moore's commitment to precision and authenticity is evident as she employs concrete language and shirks the rigid forms of her predecessors, such as Dickinson's hymnody and Whitman's expansive lines. Therefore, Moore's Poetry is an excellent example of free verse, utilizing poetic elements like rhythm, meter, and rhyme in a way that is distinctive rather than defining.