Final answer:
The relationship between corresponding angles formed by two transversals crossing parallel lines is that they are congruent.
Step-by-step explanation:
The relationship between corresponding angles formed by two transversals crossing two parallel lines is b. They are congruent. Corresponding angles are angles that are in the same position in relation to the transversals and the parallel lines. When two parallel lines are crossed by two transversals, the corresponding angles formed are congruent, meaning they have the same measure.