Answer:
Sinclair is writing fiction or nonfiction is explained below in complete details.
Explanation:
Examine why Sinclair might have chosen to inscribe The Jungle as a story. ... The book is non-fiction; he composed it as a novel to reveal to people how to operate condensations were, and the benefit to this is that it supported the campaign for better functioning condensations. Upton Sinclair wrote The Jungle to reveal the shocking working situations in meat-packing manufacturing.
 
        
             
        
        
        
Answer:
Definitely formal English as formal English is used in formal settings. Both the examples you gave are formal settings. 
 
        
                    
             
        
        
        
Answer:
The story's time period provides the reader with a reference point, for if someone reads a book about the early eighteen hundreds, they can assume that slavery has not yet been abolished and that people are outwardly racist. This helps provide a reference point, as if you didn't know the time period, you would be confused as why these events were happening. 
Explanation:
 
        
                    
             
        
        
        
This would be Descriptive writing.
        
                    
             
        
        
        
A predicate noun doesn't rename a verb so the answer is b.) False