Hello.
The answer is an insulator.
Have a nice day
        
                    
             
        
        
        
In 550 B.C.E. Cyrus the Great, the leader of the Persians, conquered the Medes and united the Iranian people under one ruler for the first time. Cyrus became the first king of the PersianEmpire and went on to establish one of the largest empires in world.
        
             
        
        
        
Yes the term mass can be used for both two dimensional and three dimensional art, so the answer is a. true.