Using a somewhat liberal interpretation of "the angles shown in the diagrams", we can conclude that the appropriate choice is ...
... A. The value of x should be 75, because the angles shown in the diagrams are congruent.
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There are 8 angles shown in each of 4 diagrams. All 32 angles are not congruent. Taken literally, "the angles shown in the diagrams are congruent" is a false statement. Rather, the marked pair of angles in each diagram are congruent angles.