They have a further reach than just the area they are in.  They can access social media, websites, and news outlets with the internet.  It can save time and money as well.  A wide range of audience is available via the internet.  People in current times seem to be highly influenced by the internet.  Those are just a few ideas that came to mind.  If you have multiple choices, list them.  You can also stick around a little bit and see what others have to say. 
        
                    
             
        
        
        
 Answer:
Active: He killed the dog.
Passive: The dog was killed by him.
I hope this helps
 
        
                    
             
        
        
        
I believe it is number 5. at the end of the conclusion. Hope this helped! 
Thanks!
~Steve