The correct answer is viruses.Concept:Disease: Disfunctioning of one or more organs or systems of the body, characterized by various signs and symptoms is called a disease. Types of diseases:Infectious diseases: ?These diseases spread from one person to another easily.They are caused by germs such as bacteria, viruses, protozoa, etc. Example: Common cold, typhoid, cholera, etc. Non-infectious diseases: These diseases are caused due to nutritional deficiency, sedentary lifestyle, or genetic defects.These diseases do not spread from one person to another. Example: Night blindness, colour blindness, etc. Explanation:Jaundice is a non-infectious disease wherein the liver is affected resulting in a yellowish discolouration of the skin and the white space of the eye.Jaundice can be caused by a problem in any of the three phases of bilirubin production.Before the production of bilirubin, unconjugated jaundice is caused due to increased levels of bilirubin During the production of bilirubin, jaundice can be caused by:Viruses, including Hepatitis A, chronic Hepatitis B and C, and Epstein-Barr virus infection (infectious mononucleosis).Alcohol.Autoimmune disorders.Rare genetic metabolic defects.Medicines, including acetaminophen toxicity, penicillins, oral contraceptives, etc.After bilirubin is produced, jaundice may be caused by obstruction (blockage) of the bile ducts from:Gallstones.Inflammation (swelling) of the gallbladder.Gallbladder cancer.Pancreatic tumour. Symptoms : ?The yellowness of the Skin and Eye WhitesDark Tinge in UrineVomitingHigh FeverLack of HungerAbnormal Weight LossStomach Pain