Answer:
can you say the answer because i dont know ypi
 
        
             
        
        
        
 The correct answer is C: the Mackenzie River!
        
             
        
        
        
Answer: A. Earth's rotation
 
        
             
        
        
        
Hi!
I don't have access to your grid, but iI can make my own to show you how to do it!
Please see attachment
on the y axis you can only use the relevant values - between 68 and 74; this way you can see more detail than if you'd used between 0 and 75. 
You just need to plot the numbers and connect the line! (I did it with ms excel)