I would say B. 
explanation: since the question is referring to asking the question to your audience, you want to make it easier for them to understand. it could be c, but also you’re asking what they might know about your topic, so making a map to illustrate your points so people who don’t understand it, can understand it. if that makes sense?
hope this helped!!
-m :)
        
             
        
        
        
Unique- A; F; I
Laws- C; K; H
Etiquette- D; L; B
Special- G; E; J
        
             
        
        
        
Answer: Ernesto Galarza's purpose for writing Barrio Boy was to explain in detail his family through writing and the struggles of adapting to life in America.
Explanation: