B due to research, it says <span>
'This poem is a joyous reflection of mant working people in America , and how they are going about their day
, strong, happy, healthy, and good at their jobs. The theme is productivity, ad happiness in one's station in life</span>
That sentence is an example of parallel structure.
When there is repetition of a specific grammatical form in a sentence, parallelism or a parallel structure is produced. This occurs when you mantain the same pattern for every compared word or idea in your construction. This makes the idea easier to follow by the reader.
A external conflict is a struggle that pits a character against an outside force such as another character or even nature.
hope this helps :)