Concept:Bile is produced by the liver but is stored and concentrated in the gall bladder.Explanation:The liver makes bile, a greenish alkaline liquid that helps digest fats.Bile then moves through ducts into the gall bladder for storage.The gall bladder releases bile into the duodenum when food is eaten.Therefore, the storage site of bile is the gall bladder, not the liver, stomach, or pancreas.Answer:A. gall bladder