Anything that says congruent line segments using this figure is incorrect. There are no givens that indicate any congruency of segments. So both A and B are incorrect.
PRT and QTS are vertically opposite and are equal. All vertically opposite angles are equal to the angle across from them. C must be your answer.
PRT might Be equal to QTS. Most of the time this will not be true. D is not universally the answer.
