That's incorrect usage. 
You'd say "I haven't seen him"
        
             
        
        
        
Is a news reporter a option. If it is, then that's the answer
        
                    
             
        
        
        
The origin of this nickname is often disputed, but many believe it originated in the 1920s from John J. Fitz Gerald, a sports writer for the New York Morning Telegraph 
 
        
             
        
        
        
Answer:
B; to indicate that the OED's editors have been studying the way people use words informally online.
Explanation:
Monitor means to watch and OED can add words to their dictionary more commonly used words such as ¨lol¨. Very interesting thing to study on twitter though.