Geometry

Question Analysis:
This problem tests coordinate comparison and the ability to justify congruence using isometries.

Key Concept Explanation:
Reflection over the y-axis changes only the x-coordinate sign.
Rule: (x, y) → (−x, y)

Step-by-Step Solution:
Compare points:
(−2, 4) → (2, 4)
(−5, 2) → (5, 2)
(−3, 1) → (3, 1)
Only x-values change sign → y-values unchanged ⇒ reflection over y-axis ✅

Option Analysis:
A: translation doesn’t just change x signs ❌
B: reflection over x-axis would ...