Geometry

Question Analysis:
This question tests the fundamental definition of a rotation.

Key Concept Explanation:
Rotation is a rigid transformation that turns a figure around a fixed point (the center of rotation) by a given angle.
It preserves the shape and size of the figure (unlike dilation, which changes size).

Step-by-Step Solution:
Recall the types of transformations:
Translation (A): Slides a figure.
Reflection (B): Flips a figure over a line.
Rotation (C): Turns a figure around a point.
Dilation (D): Resizes a figure.
The correct choice describes rotation....