Answer:
D
Explanation:
A scale is any set of musical notes in order of a certain frequency. Their is both ascending and descending scales. 
 
        
                    
             
        
        
        
I love it! super cute and good shading
        
             
        
        
        
I think that the answer is coins.
 
        
                    
             
        
        
        
Answer:
 teaching research, and design.
Explanation: