It would be A.It provides necessary detain to create a strong argument.
The fact that it has a strong lead supports this.
Fueled industrial growth, helped build railroads and worked in factories, mills, and mines, traditions became part of america, became active in labor unions and politics.
I'm not sure if it would be a protagonist and antagonist?
Good morning!
The final two lines of the first stanza meant to appeal to readers sense of "c) hearing".
Hugs!