The structure marked in the given diagram will end in :
|B.||Superior vena cava|
Right subclavian vein
Junction of left jugular vein & subclavian vein
Answer D) Junction of left jugular vein & subclavian vein
Explanation: Marked structure is Thoracic Duct
The thoracic duct is the main lymphatic channel for the return of chyle to the venous system. The thoracic duct drains lymph from both lower limbs, abdomen (except the convex area of the liver), left hemithorax, left upper limb and left face and neck.
The thoracic duct most inferior part, located at the union of the lumbar and intestinal trunks, is the cisterna chyli which lies on the bodies of vertebrae L1 and L2 (range T10-L3)
Where does the thoracic duct drain?
The thoracic duct delivers lymph into the junction between left subclavian and left internal jugular veins.
Right lymphatic duct delivers lymph into the junction between the right subclavian and right internal jugular veins.