Language is  a system of signs represrnting ideas to convey a message. Those symbols, which are words can be arbitrary, ambiguous, abstract representations of other phenomena. Words are not intrinsically connected to what they represent. Meanings of words can shift over time. The arbitrary character allows us to invent new words. 
Language is ruled guided, simply put, verbal communication is guided by unspoken but broadly understood rules.
So I would say that option A, C and D are correct.
Meanwhile, I think that option B is incorrect since a mean of communication is understood as the tool and technology employed in order to convey a message, exchange information, ideas.
 
        
                    
             
        
        
        
Answer:Daisy and Tom Buchanan are most responsible for Gatsby's death. 
Explanation:
In The Great Gatsby, Daisy and Tom Buchanan are most responsible for Gatsby's death. The true villain of the narrative, Tom employs Daisy's idea of relieving their boredom by going to town and insidiously urges Gatsby to take Daisy in his coupe, allowing Gatsby to be seen with her.
 
        
             
        
        
        
Following Gatsby's death, Nick and Jordan have a famous phone call in which she chastises him and calls him dishonest. She adds that no one had ever left her the way he did and adds that he is a "careless driver". The Merton College Library is supposedly the place where Jay Gatsby got his education and that is why he calls himself and Oxford man.
        
             
        
        
        
I'm thinking Huck Finn, and Of Mice and Men are similar, just by the dialogue, if not by the mannerisms of some of the characters.
I don't know if that answers the question but, hey; I tried. :-/