We are supposed to select the relationship between the side lengths of the trapezoid. Notice that the angles near the longer base are congruent meaning that the given trapezoid is isosceles. Therefore, the side lengths must be equal.
This matches the fourth statement, D. Note that all other options are incorrect simply due to the fact that in each of them one side of the equation has side lengths, while the other has angle measures — they cannot be equated.
