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Answer:
The graph in the question does not represent a linear function because a linear function is always a straight line, and is represented by the following equation:
y = f(x) = a + bx
The function illustrated in the graph looks more like a logarithmic function that is flattening as it progresses.
 
        
             
        
        
        
Here's a doc with some key notes:
hope that helped <3
 
        
             
        
        
        
Hi, 
I would say the best choice is C, <span>sensory appeals are made up of imagery. </span><span>
~Elisabeth</span>