From what I remember, c is the correct answer.
        
             
        
        
        
Answer:
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Explanation:
 
        
             
        
        
        
Answer:
The main reason airplanes fly in the stratosphere is because this is where the least amount of turbulence is found. In addition, because the stratosphere is very dry, there are fewer clouds in this layer, making for a much smoother ride overall.
Explanation:
 
        
                    
             
        
        
        
New seafloor is the answer