Geometry

Question Analysis：
This question requires identifying valid glide reflections based on the direction of translation and orientation of the mirror line.
The main focus is testing if the translation is parallel to the line of reflection.

Key Concept Explanation：
Glide reflection = reflection + parallel translation
Reflection over x = ... → vertical line → translation must be vertical
Reflection over y = ... → horizontal line → translation must be horizontal

Step-by-Step Solution：
A: x = 0 is vertical, left = horizontal → Not parallel → ✖
B: y = -3 is horizontal, up = vertical → Not parallel → ✖
C: y = 2 is horizontal, right = horizontal → ✔ parallel → ✔
D: x = 5 is ...