The liver is the correct answer because it is an organ that is located in the abdominal cavity and plays a crucial role in detoxification, metabolism, and digestion. It is responsible for producing bile, which aids in the digestion and absorption of fats. Additionally, the liver stores vitamins, minerals, and glucose, and helps regulate blood sugar levels. It also filters and detoxifies harmful substances from the blood, making it an essential organ for overall health and well-being.