Which of the following refers to the combining form for liver?

The combining form that refers to the liver is "hepat/o." This term is derived from the Greek word "hepar," meaning liver. In medical terminology, combining forms are used to create words that describe specific body parts, conditions, or functions. The use of "hepat/o" is foundational in various medical terms, such as hepatitis (inflammation of the liver) and hepatology (the study of liver diseases).

The other choices refer to different body parts or conditions: "mamm/o" relates to the breast, "leuk/o" refers to white (as in white blood cells), and "mast/o" also pertains to the breast but often in the context of surgical procedures or tumors. Understanding the significance of these combining forms is crucial in the medical field, as they help in the clear communication of complex health topics.