Economy
Ecosystem 
Econometrics 
Ecologist
Ecology
        
             
        
        
        
A,the right answer is Comma...
        
                    
             
        
        
        
The Latin root "bene" means good. Beneficiary means a person who derives advantage from something, especially a trust, will, or life insurance policy. The Latin root helps you understand that because it means a person who derives ADVANTAGE from something. Meaning it's something good.
Hope this helps! :)