Hepatitis is the inflammation of the liver, usually caused by a viral infection, that causes fever, loss of appetite, jaundice, fatigue, and altered liver function

• A. Hepatitis
• B. HIV
• C. Contamination
• D. Pathogen

Answer: (A)

This question tests recognizing a disease by its signs and the organ it affects. The description points to hepatitis because it names inflammation of the liver accompanied by fever, loss of appetite, jaundice, fatigue, and altered liver function—classic features of this condition. Hepatitis is commonly caused by a viral infection, which matches the clue about its usual cause. The other options don’t describe a liver disease: HIV is a virus that affects the immune system, not the liver inflammation described; contamination refers to exposure to something harmful, not a disease; a pathogen is a general term for an infectious agent, not the illness itself. So the term that best fits the description is hepatitis.