For this case we want to identify the transformation represented in the figure below. Let's analyze one by one the possible options:
rotation
This is not the correct option since we see the same axes of symmetry for the figure
translation. CORRECT
This one it's the best option since we see that the figure is moving without rotate or flip
reflection
This is not the correct option since each point is not at the same distance from the central line
dilation
We see the same scale for the two figures so then this one is not the correct option