Answer:
D. The graph of g(x) is shifted 2 units up.
Explanation:
Adding 2 to the y-coordinate of a point shifts it up by 2 units.
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The graph of f(x) is all points (x, f(x)). When you add 2 to f(x), you make the graph of g(x) be all points (x, g(x)) = (x, f(x)+2). That is all of the points on the original graph are shifted up by 2 units.