What  is  changing ? need details please
        
             
        
        
        
Correct ones should be 
C
A
B
D
D
        
             
        
        
        
It should be C the others really don’t make any sense
        
                    
             
        
        
        
Answer:
Word Count
Explanation:
The answer is Word Count, this is correct because the options "Word Number" and "Word Length" do not make much sense when trying to calculate the total number of words in a piece of writing. And, not all pieces of writing are stories, so you can cross of "Story Length" as an option too. Leaving you with "Word Count", which can be the accumulative number of words in a piece of writing.
Hope this helps!