Answer:
By a search in google, i found the graph for this problem, that is seen below.
The end behavior of f(x) is "how the function behaves as IxI takes large values"
Now, in the graph you can see that around x = -8, the graph goes down very quickly, and around x = -4, the graph goes up very quickly, and in neither case is a sign that the graph will have an inflection point or a change in concavity/convexity, so the left side goes to minus infinity and the right side goes to plus infinity.
Then the correct option is:
From this, we can conclude that if x ⇒ -∞, we will take the left part of the graph, then y⇒ -∞
And when x ⇒∞, we must take the right part of the graph, then y ⇒∞.