Answer:
C) Translation
Step-by-step explanation:
A rotation will look like you've spun the shape around a center point, like cars in a Ferris wheel rotate around the center
A reflection will be the same image, but it will have a line of reflection between it, and it's original image, like 2 images in a mirror
A translation is the same shape, but shifted horizontally, vertically, or both. That's what's happening here!
A dilation is the same shape, just shrunk or enlarged in scale. Like how your the pupils of your eye dilate depending on how much light there is