First option isn't answer because if trapezoid has same sides we don't usually call it trapezoid. We call it square.
Second option isn't answer because something that has 4 sides cannot be equal to something that has 3 sides
Third option is true because trapezoid has exactly one pair of parallel sides.
Forth isn't the answer because if trapezoid had 2 parallel sides we would call it rectangle and not trapezoid.
