2. Using segments $a=16, b=13, c=10, d=6$ as sides, and making $a // c$ to form a quadrilateral, such a quadrilateral
(A) can be made one;
(B) can be made two;
(C) can be made three;
(D) can be made infinitely many;
(E) cannot be made.
2. (E)

Assuming it can be constructed, as shown in the figure, in $\triangle A B C^{\circ}$, the lengths of the three sides are $6, 6, 13$, respectively. At this point, the sum of the two sides is less than the third side, so it cannot be constructed.