The correct answer is language barrier.
If people are ignored because of their inability to speak standard English, they have just encountered a language barrier. It is a kind of noise in communication. When there is a language barrier, there could be a difficulty in communication. I hope this answer helped you.
The corrcet answer would be relational.
C. Construction.
I took an OSHA course for Ag Mech, that sounds like construction.
In "chicago" , Sandburg use rhyming and rhythm in his verbs. The usage of this verbs make "chicago" is really interesting to read and the readers can't help but to feel some sort of excitement by reading it