Which one of the following terms refers to inflammation of the liver?

Medical terms often consist of a root word and a suffix.

Hepat/o = liver

-itis = inflammation

Therefore, hepatitis literally means inflammation of the liver.

The incorrect options refer to inflammation of other body parts:

Dermatitis – inflammation of the skin

Gastritis – inflammation of the stomach

Arthritis – inflammation of the joints

Hence, the correct answer is C. Hepatitis.