Answer
Option C is correct.
There is a linear relationship between x and y when x is less than 0 and a nonlinear relationship when x is greater than 0.
Step-by-step explanation
From the graph, we can see that at values of x less than 0, the graph indicates a very straight line that translates to a linear relationship.
But at values of x greater than 0, the graph begins to curve showing that the relationship is no longer linear.
So, option C is correct.
Hope this Helps!!!