Answer: A. rhombus
Explanation:
We know that a square is a quadrilateral with all sides equal in length . Also all its interior angles are right angles.
Therefore, A square is always a rhombus.
A rhombus is not a square unless the angles are all right angles.
On the other hand a square is a rhombus since all four of its sides are of the same length.
Hence, A square is a type of a rhombus .