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Answer:
(C) Two pairs of opposite sides are congruent.
Step-by-step explanation:
A parallelogram is a four-sided plane rectilinear figure with opposite sides parallel.
From the properties of parallelogram, it is known that the opposite sides and opposite angles of the parallelogram are equal in measure.
Also, the diagonals of parallelogram bisect each other.
For example in the gievn parallelogram ABCD, AB=CD and AD=BC,
Therefore, option C is correct out of all the other options because it is a property of parallelogram.

According to the properties of parallelogram the correct option is C) Two pairs of opposite sides are congruent.
One special kind of polygons is called a parallelogram. It is a quadrilateral where both pairs of opposite sides are parallel.
There are six important properties of parallelograms. They are as follows:
- Opposite sides are congruent.
- Opposite angles are congruent.
- Consecutive angles are supplementary.
- If one angle is right, then all angles are right.
- The diagonals of a parallelogram bisect each other.
- Each diagonal of a parallelogram separates it into two congruent.
Therefore, the correct option is C).
For more information, refer the link given below
https://brainly.com/question/1563728