The correct response is:
The multiplicity of (x−3) is even because the graph of p(x) touches the x-axis at (3,0) and then turns around.
This is because if (x - 3) is a factor of an even multiplicity, the graph will touch the x-axis at x = 3 and turn around without crossing the axis, indicating a return to the same side of the x-axis after touching it. If it were an odd multiplicity, the graph would cross the x-axis at that point.