True or they could get into your stuff. 
        
             
        
        
        
I'm going with 
<span>The things that you post online become public information.
and
</span><span>Employers screen job candidates based on social medias.
Because when you post online, you can very easily make your account private, or only share the post to a specified group of people.
Employers also screen job candidates based on their backround, personality, etc.</span>
        
                    
             
        
        
        
Answer:
All should be added.
Explanation:
All of these are important to your cover letter to make it seem professional. 
Hope this helped
 
        
                    
             
        
        
        
The answer is by earn a recognized diploma get a guaranteed job.