B. It is a rotation about the origin by 90° in clockwise direction.
Explanation:
Step 1; First, we need to compare the dimensions of the two figures. We check to see if the side lengths are the same. If the parameters are the same, the transformation could be a rotation, a reflection or a translation. Both figures have identical parameters.
Step 2; If the figure is reflected, both the figures would be identical but with a 180° rotation but this is not a reflection. If it is translated, the coordinates would be different but the figures would have the same direction, so this is not a translation. This excluded options c and d.
Step 3; It is a rotation but as the figure FKW is in the third quadrant and the figure RNG is in the fourth quadrant, it is a rotation in the clockwise direction which is option B.