Geometry

Question Analysis:
This question tests the basic definition of a translation in rigid transformations.

Key Concept Explanation:
A translation is a rigid motion that moves every point of a figure the same distance in the same direction, preserving size and shape.

Step-by-Step Solution:
Option A describes a reflection, not a translation.
Option B correctly defines a translation.
Option C describes a rotation.
Option D describes a dilation, which is not rigid.

Option Analysis:
A: Incorrect (reflection).
B:...