Step-by-step explanation:
In A, XY and ZW are congruent sides and both the sides are parallel.they will never interecet.
In B, WX and YZ are also congruent and are parallel.They also never intersect.
In C, WY and WZ are not congruent and will intersect at one point.They form triangle.
In D, angle of W is same as angle of Y.They are congruent angles.Opposite angles of a parallelogram are always equal.
