In choice A, we are given two quadrilaterals.
All angles are right angles, so we know they are rectangles.
Since rectangles are parallelograms, opposite sides are congruent.
Checking the length ratios of two pairs of adjacent sides, that is enough to know whether they are or are not similar. In this case, they were not.
In choice B, we deal with triangles. We are given the lengths of two pairs of sides and their included angles. Since the sides were of proportional length, and the included angles were congruent, then by SAS Similarity, the triangles are similar.
In choice C, we have quadrilaterals again. We are given two pairs of sides. We assume those sides were corresponding. It turned out their lengths were not proportional, so we can say the quadrilaterals are not similar. The problem here is that even if the side lengths had turned out to be proportional, we would not be able to conclude the quadrilaterals are similar because we don't know about the other 2 of pairs of angles or the other two pairs of sides.
In choice D, we were given two triangles and the lengths of all six sides. If every pair of corresponding sides were in the same ratio, then by SSS Similarity, we would be able to conclude the triangles are similar, but only 2 pairs of sides were in the same ratio. The third pair of sides is not, so the triangles are not similar.