Which figure does not appear to be congruent to this one?

Answer:
Step-by-step explanation:
In the image you can observe that the third choice doesn't appear to be congruent to the given one, beacuse it's smaller.
On the other hand, choice A, B and D, have figures that apparently are the same size and shape to the given one, they were just rotated, which is a rigid transformtion, that is, they just move, their size or shape doesn't shape.
Therefore, the right answer is C figure.