Which shows only a vertical translation from the shaded figure onto the unshaded figure?

Question

On a coordinate plane, a triangle is shifted up.
On a coordinate plane, a triangle is shifted to the left.
On a coordinate plane, a triangle is enlarged to form another triangle.
On a coordinate plane, a triangle is shifted up and to the left.

Answer 1

The scenario that describes only a vertical translation from the shaded figure onto the unshaded figure is when "on a coordinate plane, a triangle is shifted up." This movement only changes the vertical position of the triangle without altering its shape or horizontal position.

The other options involve either horizontal movements, enlargements, or a combination of movements that affect both vertical and horizontal positions, which do not qualify as a "vertical translation" alone.