Final answer:
Transduodenal sphincterotomy is a surgical procedure on the sphincter of Oddi option (C), which regulates the flow of bile and pancreatic juice into the duodenum.
Step-by-step explanation:
The term Transduodenal sphincterotomy indicates surgery of the sphincter of Oddi option (C). This procedure involves making a cut into the sphincter to relieve a blockage and improve the flow of bile and pancreatic juice into the duodenum. The sphincter of Oddi is a muscular valve that controls the flow of digestive juices, which include bile from the common bile duct and pancreatic juice from the main pancreatic duct, into the duodenum. A sphincterotomy is often performed when there are gallstones, or there is a need for bile duct drainage, or if there is a suspicion of sphincter of Oddi dysfunction.