Question

Parallelogram WXYZ and parallelogram W" X" Y" Z" are congruent.

Answer 1

Reflections, rotations, and translations all change the location, but not the size or shape of the parallelogram.  Congruence describes the line lengths and angle sizes - all of which will be maintained.  Thus, reflections, rotations, and translations will maintain congruence.

All of the options use only reflection, rotation, and translation, so all of these could be the transformation in question.