Bile enters the duodenum for fat digestion

Steps:

• Bile is produced by the liver and stored in the gallbladder.
• It travels through the common bile duct to reach the small intestine.
• The duct joins the pancreatic duct at the sphincter of Oddi.
• This junction opens into the duodenum, the first part of the small intestine.

Why B is correct:

• The duodenum receives bile directly from the common bile duct, as defined in digestive anatomy, to emulsify fats for absorption.

Why the others are wrong:

• A. Colon: Large intestine site for water absorption, not bile entry.
• C. Ileum: Distal small intestine section for nutrient absorption, but bile enters proximally.
• D. Stomach: Site for initial food breakdown by acid, before bile's role.

Final answer: B