Literary devices assist the author to employ a figurative language in their work that helps to create rhythm and vivid imagery in the poems which aids to evoke the desired response from the audience. Alliteration is one of these devices that involves the repetition of a similar consonant sound in a phrase or line that helps to create rhythm and attract the readers' attention towards a particular section of the poem which is intended to convey a specific meaning.
In the given question, option C best reflects the theme of 'world containing dark and powerful forces' through the alliterative phrase 'Could frame thy fearful symmetry' as the repetition of consonant sound 'f' in 'frame' and 'fearful' implies 'gloomy' and 'shadowy' tone that uplifts this theme. Thus, <u>option C</u> is the correct answer.
