Think about what each option preserves. A transformation that keeps shape, size, and orientation only allows a pure position shift.
Translation moves point $(x, y)$ to $(x + t_x,\ y + t_y)$. Every point gets the same displacement vector, so line lengths and angles do not change.
Scaling multiplies coordinates by a factor, so size changes. Rotation turns the object about a pivot, so orientation changes. Shearing slides layers of the object, so the shape distorts.
The only match is Translation.
\[\boxed{\text{Translation}}\]