Answer:
Rectangle
Step-by-step explanation:
Opposite sides (1, 1), (4,1) and (1, 3), (4,3) are horizontal and have length 3.
Opposite sides (1, 1), (1, 3) and (4, 1), (4,3) are vertical and have length 2.
There two pairs of opposite sides that are congruent, so this is a parallelogram. Since not all sides are congruent, this is not a square or a rhombus.
In addition, vertical sides and horizontal sides form right angles, so this is a parallelogram with right angles. It is a rectangle.
