Answer: Side P R corresponds to Side T R.
Explanation:
Given, Side P Q is parallel to Side S T.
Triangle PQR is similar to triangle TSR.
Corresponding sides of two similar triangles are proportional .
Here, side PQ corresponds to side TS [first two letters]
side QR corresponds to side SR [Last two letters]
side PR corresponds to side TR [First and last letter]
Hence, the correct option is "Side P R corresponds to Side T R. "