Which set of transformations can you use to check whether two polygons are congruent? . . . a.translations, stretches, and dilations. . . b.reflections, translations, and stretches. . .c. rotations, dilations, and translations. . . d.translations, reflections, and rotations.

Translations, reflections, and rotations is the set of transformations you can use to check whether two polygons are congruent.

Reflection is flipping an object across a line without changing its size or shape.
Rotation is rotating an object about a fixed point without changing its size or shape.
Translation is sliding a figure in any direction without changing its size, shape or orientation.

The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.