The correct answer is: Esophageal hiatus

Remember back to the thorax--the vagus joins the esophageal plexus and covers the esophagus. The anterior and posterior vagal trunks form from the esophageal plexus-- they pass into the abdomen through the esophageal hiatus, on the anterior and posterior surfaces of the esophagus. The aortic hiatus is deep to the median arcuate ligament--it transmits the aorta and the thoracic duct. The caval foramen is found in the central tendon of the diaphragm; it transmits the inferior vena cava. Psoas major is deep to the medial arcuate ligament, and quadratus lumborum is deep to the lateral arcuate ligament.