Bile is best described as which of the following?

• A. A digestive enzyme in saliva
• B. A digestive fluid made by the liver and stored in the gallbladder that helps digest fats
• C. A hormone regulating metabolism
• D. A protein used in blood clotting

Answer: (B)

Emulsifying fats is the main idea here. Bile is a digestive fluid produced by the liver and stored in the gallbladder; when released into the small intestine, bile salts emulsify fats, breaking them into tiny droplets so pancreatic lipase can act more efficiently. It isn’t an enzyme itself, and it isn’t produced in saliva. It isn’t a hormone regulating metabolism, nor a protein involved in blood clotting. So describing bile as a digestive fluid made by the liver and stored in the gallbladder that helps digest fats is the best fit.