Answer:
D and E
Step-by-step explanation:
A. Wrong: is a quadrilateral but has TWO pairs if parallel sides.
B. Wrong: is also a quadrilateral but also has TWO pairs if parallel sides.
C. Wrong: has only ONE pair of parallel sides, but is not a quadrilateral.
D. Right: is a quadrilateral with only ONE pair of parallel sides.
E. Right: is a quadrilateral with only ONE pair of parallel sides.
