Answer: The answer is a counterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axis.
Step-by-step explanation: For every square, it is one 90 degree angle, or rotation. If the figure PQRS is rotated to the left square, that would be considered a 90 degree angle. If you do 180 degrees, it would be on the lower left. A 270 degree angle and it would be with P'Q'R'S'. A whole 360 degree angle would be right back where it started, or where PQRS is. So if a 180 degree rotation is made, the last step would be to reflect over the y axis. The y axis is the vertical, or upright line.