Which statements describe a parallelogram that must be a rhombus? parallelogram with four congruent sides parallelogram with opposite sides parallel parallelogram with four congruent angles parallelogram with diagonal that bisects an angle parallelogram with diagonals that bisect each other

Answer:The correct option is 1.Step-by-step explanation:Rhombus is a special case of parallelogram.The properties of a parallelogram and rhombus:1. Opposite sides parallel and equal.2. Diagonals bisect each other.3. Opposite angles are congruent.The consecutive sides of a parallelogram may or may not be equal. But a rhombus has four congruent sides.If a parallelogram has four congruent sides, then that parallelogram is known as rhombus.The required statement that describe a parallelogram must be a rhombus is  "parallelogram with four congruent sides ".Therefore the correct option is 1.