Ductus venosus connects:
In fetal circulation, ductus venosus shunts a poion of the left umbilical vein blood flow directly to the inferior vena cava. It allows oxygenated blood from the placenta to bypass the liver. The only related option appears to be choice c. Fig. : Fetal circulation
Pulmonary trunk and descending aoa
Right atrium and left atrium
Poal vein and IVC
Pulmonary trunk and ascending aoa
Bronchopulmonary Segments, Embryonic veins