Answer:
The correct answer is C.
Step-by-step explanation:
While prose is a form of language that has no formal metrical structure, and therefore, allows the writer a great amount of freedom when writting, it does not have an estetic or expressive aim. Prose is used mainly in narrations with an ordinary grammatical structure.
On the other hand, poetry seeks to excite pleasure by describing beautiful, imaginative, or elevated thoughts. The author can use all the rethoric devices he needs to fulfill this purpose. Poetry can even be written in "free verse" which gives the writer complete freedom over the grammatics and style.