Final answer:
The right brachiocephalic vein is closer to the Superior Vena Cava because it is situated on the right side of the body, providing a more direct connection.
Step-by-step explanation:
The brachiocephalic vein that is closer to the Superior Vena Cava (SVC) is the right brachiocephalic vein. This vein forms from the fusion of the internal jugular vein and the subclavian vein, along with inputs from the vertebral and internal thoracic veins.
The right brachiocephalic vein is situated on the right side of the body and so has a more direct course to the SVC, while its counterpart on the left side has a slightly longer pathway as it crosses over to reach the SVC.