Answer:
<u>Option B: square is the answer.</u>
Step-by-step explanation:
Rotational symmetry occurs when any given shape or pattern can be rotated around a central point and it remains the same throughout. Many shapes like- rectangles, squares, circles, regular polygons have rotational symmetry. The point around which the rotation occurs is the center of the shape.
Here, out of the given four figures, square has a rotational symmetry as it will remain the same throughout rotation.
Rest options A,C and D will not retain the same shape throughout the rotation of 360 degrees, that is why these are wrong options.