<p>Can someone explain it to me? Thanks!!!</p>
<p>Well, this is a concept you should've learned in early math classes, but whenever you add a number to the x variable in a function, it shifts the graph horizontally. When you add a number to the x variable, you shift it to the left; when you add a negative number to the x variable, you shift it to the right.</p>
<p>So in this case, f(x+2) it shifts the graph left 2 units; it becomes like the graph in choice C.</p>
<p>got it. Thanks</p>