The diagonals of a are always perpendicular. a) parallelogram b) quadrilateral c) rectangle d) rhombus

Properties:

The diagonals of a parallelogram always bisect each other.

The diagonals of a quadrilateral just intersect in the case of a convex quadrilateral.

The diagonals of a rectangle bisect each other. The diagonals are always equal.

The diagonals of a rhombus bisect each other at 90°.

Hence The diagonals of a Rhombus are always perpendicular.

Option D) is the right answer.