Final answer:
Upon reflecting figure PQRS to create figure WXYZ, side QR corresponds to either side WX or YZ of WXYZ, based on the location of the points after reflection.
Step-by-step explanation:
If figure PQRS is reflected to form figure WXYZ, then we must match each point of PQRS to its corresponding point in WXYZ based on the reflection. Side QR of figure PQRS will correspond to the side of figure WXYZ that is formed by the points that are images of Q and R after the reflection.
If we consider standard reflection rules, the images of points Q and R will be points W and X, or points Y and Z, depending on the axis of reflection. Thus, side QR of figure PQRS corresponds to either side WX or side YZ of figure WXYZ, given that the reflection does not alter the relative position of those points.