Final answer:
The gallbladder is located in the upper right (option B) quadrant of the abdomen, just beneath the liver, where it stores and concentrates bile for lipid digestion.
Step-by-step explanation:
The gallbladder is normally located in the upper right abdominal quadrant. It is a small, hollow, pouch-like organ that lies just under the liver. The gallbladder's primary function is to store and concentrate bile produced by the liver until it is needed for the digestion of lipids in the duodenum. The gallbladder is about 8 to 10 cm long and shaped like a tapered sac. It connects with the cystic duct, which then merges into the common bile duct, carrying bile to the duodenum. When fatty foods are consumed, a hormone signals the gallbladder to contract, propelling bile into the duodenum to assist in digestion.
To summarize, the gallbladder is located in the upper right quadrant of the abdomen, under the liver, and plays a key role in the digestive process by concentrating and secreting bile when fat enters the duodenum.