D. The conversation you write must sound natural for the characters.
More natural conversations between characters make your writing more fun to read. Reading a dialogue that sounds like it could actually happen engages the reader, and creates an investment in the characters themselves. Think of it this way, would you rather watch a movie with good acting or bad acting?
        
                    
             
        
        
        
Answer:
Smog is a mixture of fog and smoke. hope this is enough to help you with your question :)
 
        
             
        
        
        
Answer:
Tonight is game night; besides, that movie has terrible reviews.
 
        
                    
             
        
        
        
The answer is: A. He reacts in a purely emotional way. 
In the excerpt from "The Death of Ivan Ilyich," Tolstoy makes reference to judge Peter Ivanovich's affecting bevahior at his Ivan Ilych's funeral. He has been a close friend to Ivan, and knew he was going to die. In the passage, he responds to Ivan's wife with a sigh and is unable to finish his phrase, making both deeply moved emotionally.