Final Answer:
When Il is parallel to line M and R is parallel to line S, the corresponding angle postulate asserts that corresponding angles formed by these parallel lines and a transversal are congruent. Accordingly, in the context of this geometric configuration:
a)
corresponds to

b)
corresponds to

c)
corresponds to

d)
corresponds to

Therefore, the correct assignment of angles is given by option c), where

Step-by-step explanation:
When two lines are parallel and a transversal intersects them, alternate interior angles are congruent. In this scenario, Il is parallel to M, and R is parallel to S. Therefore, angle a corresponds to ∠M, angle b corresponds to ∠Il, angle c corresponds to ∠R, and angle d corresponds to ∠S. This relationship between corresponding angles for parallel lines and a transversal is the basis for determining the values of a, b, c, and d.
Understanding the properties of angles formed by parallel lines and a transversal is essential to solve problems involving angle relationships. The Alternate Interior Angle Theorem states that when a transversal intersects two parallel lines, alternate interior angles are congruent. Applying this theorem to Il parallel to M and R parallel to S, we establish the correspondence between angles a, b, c, and d and their respective angles ∠M, ∠Il, ∠R, and ∠S.
In conclusion, option (c) accurately represents the relationships between the given angles and their corresponding angles formed by parallel lines and a transversal. Recognizing these angle relationships is fundamental in geometry, providing a systematic approach to determining angle measures in various geometric configurations.