Final answer:
The quadrilateral with two pairs of equal sides is a rhombus. A rectangle, a parallelogram, and a trapezoid do not always have sides of equal length, except for the rectangle having two pairs of equally long opposite sides, but all its angles are right angles.
Step-by-step explanation:
The question is about identifying a type of quadrilateral that has two pairs of equal sides and joins up. To answer the student's question, each option should be considered:
- A rectangle has two pairs of equal sides and opposite sides are parallel, but all angles are right angles.
- A rhombus has all four sides equal in length and opposite angles equal, which satisfies the condition.
- A parallelogram has two pairs of sides that are equal and parallel, but they do not generally have all sides of equal length.
- A trapezoid only has one pair of parallel sides, and the sides are not necessarily equal in length.
Therefore, the answer is B) Rhombus, as it is the only quadrilateral listed that always has two pairs of equal sides.