Sentence Correction

According to researchers at the University of Texas, the trend that has emerged through studying 179 family currently on welfare indicate the possibility that the 1996 welfare law might be ineffective policy signed by a president who hoped to win another election.

(A) indicate the possibility that the 1996 welfare law might be ineffective policy signed by a president who hoped
(B) indicate that the 1996 welfare law might possible be ineffective policy signed by a president who hoped
(C) may indicate that the 1996 welfare law has been ineffective policy signed from a president who had hoped
(D) indicates that the 1996 welfare law may be ineffective policy signed by a president who hoped
(E) indicates that the 1996 welfare law might be ineffective policy signed from a president who hoped.

OA is D

indiactes or indicated? I am having a problem choosing between the two.