Which vest explains if quadrilateral WXYZ can be a parallelogram

Sounds like a multiple choice question.

A parallelogram is a quadrilateral, except all 4 sides are parallel, unlike a rhombus, which is also a quadrilateral. In a parallelogram, all the sides can be the same length, such as a square, or you can have two sides with the same length, and two other sides with the same length. As long as you have 2 sets of parallel lines, it's a parallelogram.