Final answer:
In parallelogram QRST, the transformation that changes its orientation is Reflection. Translations, Rotations, and Dilations do not change the orientation of the figure.
Step-by-step explanation:
The student has asked which transformation will change the orientation of parallelogram QRST. The answer is C. Reflection. This transformation results in a figure that is a mirror image of the original, thus changing its orientation. Translations simply move the figure from one place to another without altering its orientation. Rotations turn the figure around a fixed point, also without changing the orientation of the figure. Dilations resize the figure, but all corresponding angles and proportions remain the same, so the orientation remains unchanged.