The correct answer is option 1, Liver. Hepatitis is a medical condition that affects the liver. The liver is an important organ in the human body responsible for performing various functions, including detoxification of harmful substances, production of bile for digestion, storage of nutrients, and regulation of blood sugar levels. Hepatitis is inflammation of the liver, usually caused by a viral infection. There are different types of hepatitis, including Hepatitis A, B, C, D, and E, each caused by different viruses. Hepatitis can also be caused by excessive alcohol consumption, certain medications, toxins, or autoimmune diseases. The inflammation of the liver can impair its normal functioning and lead to symptoms such as fatigue, jaundice, abdominal pain, and liver damage if left untreated.