To analyze the details of subgenres like prose poetry and lyric poetry, it is important to understand their distinct characteristics. Based on the options provided, the most accurate conclusion would be:
Prose poetry is written in complete sentences, while lyric poetry is not.
This is because prose poetry typically lacks the line breaks associated with traditional poetry, presenting a more narrative form while still using poetic devices, whereas lyric poetry often relies on form, stanzas, and may not utilize complete sentences in the same way as prose.
The other options presented contain inaccuracies regarding the definitions and characteristics of the two forms. For example, both prose poetry and lyric poetry can employ imagery and figurative language, and both can convey themes or messages. Additionally, lyric poetry is often structured in lines and stanzas.