The ligament extends from the lateral surface of the ovary to the pelvic wall. the ligament extends from the lateral surface of the ovary to the pelvic wall. ovarian round mesovarium gubernaculum suspensory

The suspensory ligament had its major blood vessels of the ovary: the ovarian artery and ovarian vein.  The Suspensory Ligament Extends from the lateral surface of the ovary pass through the open end of the uterine tube to the pelvic wall. 

the answer is d. chordata