I think you have to give the definitions that should be easy to find with a quick google search ;)
        
             
        
        
        
Answer:
The story of The Ring of Gyges tells us that if we had this sort of power no one would be able to be trusted and therefore, it shows us that justice is always self-interested and thus really not justice but a form of injustice.
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Answer:
never give up is important because you can learn from the mistake you made the mistake will be one of the important things that help get where you are to day lets say that you give up on your dream and you see all your friend successful and you say they are lucky well they are successful because they didn't give up they keep working hard to get were they wanted  so don't give up even if life feel hard just keep going.
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The answer is B. it's just a way to strengthen your argument by debunking the other side respectively.
        
                    
             
        
        
        
D. replace a semicolon 
 
     hope this helps :)