<prompt> Ligamentum teres is remnant of -Umbilical arteriesLeft umbilical veinDuctus-venosusDuctus arteriosus  <response>: Ans. is b i.e., Left umbilical vein o The ligament teres represents the obliterated left umbilical vein.Embryonic partRemnantsDuctus arteriosusLigamentum arteriosumUmbilical arteryProximal partSuperior vesical artery.Distal partMedial umbilical ligamentUmbilical veinLigament teresDuctus venosusLigamentum venosusSeptum primumFossa ovalisSeptum secondumAnnulus ovalis Limbus fossa ovalis 