Which cavity among the following contains the liver?

The liver is primarily located in the abdominal cavity, which is the correct choice. This cavity is situated between the diaphragm and the pelvis and encompasses a significant portion of the body's vital organs, including the stomach, intestines, spleen, and pancreas, in addition to the liver. The liver plays crucial roles in digestion, metabolism, detoxification, and storage of nutrients.

The pelvic cavity, while it contains organs such as the bladder, reproductive organs, and part of the intestines, does not house the liver. The thoracic cavity is located above the diaphragm and contains the heart and lungs, but again, does not include the liver. The spinal cavity, also known as the vertebral cavity, encases the spinal cord and is not related to the abdominal organs. Thus, the abdominal cavity is the only correct area where the liver is found.