Question

a rhombus is a parallelogram with four acute angles four congruent sides four congruent angles four congruent diagonals

Explanation:

A rhombus is defined as a parallelogram with four congruent sides. It doesn't have four acute - angles (it can have acute and obtuse angles), not four congruent angles (opposite angles are congruent), and diagonals are not congruent (they are perpendicular bisectors of each other).

Answer:

B. four congruent sides