<prompt> A term baby developed jaundice on 3rd day up to the thigh with normal stool and urine. Mothers blood group is O ve and that of babies A ve. The cause of jaundice isRh incompatibilityPhysiological jaundiceExtrahepatic biliary atresiaSepsis  <response>: Physiological jaundice Most neonates develop visible jaundice due to elevation of unconjugated bilirubin concentration during their first week.This common condition is called physiological jaundice.This pattern of hyperbilirubinemia has been classified into two functionally distinct periods -1. Phase oneLast for 5 days in term infant with peak bilirubin levels to 12 mgdl.Last for 7 days in preterm infant with peak bilirubin levels to 15 mgd1.2. Phase twoa. There is decline to about 2 mgdl, which lasts for 2 weeks after which adult values are attained. 