What organ stores and concentrates bile?Group of answer choicesLiverGallbladderPancreasBile duct

The organ that stores and concentrates bile is the Gallbladder.

Explanation:

1. Liver: While the liver produces bile, it does not store it. Bile is secreted by the liver and flows into the gallbladder.
2. Gallbladder: This is the correct answer as it functions specifically to store and concentrate bile until it is needed for digestion.
3. Pancreas: This organ produces digestive enzymes and bicarbonate, but it is not involved in bile storage.
4. Bile duct: This is a tube that transports bile from the liver to the gallbladder and from the gallbladder to the small intestine but does not store bile itself.

Thus, the correct answer to the question is Gallbladder.