Answer: The answer would be B, b. He produced many ready-mades, or common objects that are transformed into art.
Explanation: this played a major role in this part.
 
        
                    
             
        
        
        
Organum was the earliest type of polyphony that developed by adding another vocal line to plainchant. 
        
             
        
        
        
In harmony, the is considered a place of rest and return. so your answer is D :) hope that helped
        
                    
             
        
        
        
Portraits were important in early history because if we had found those paintings and pictures we can determine what there life back then was and what materials they had in the past then what higher materials we have now. 
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