<prompt> Oligohydramnios is seen in -Renal agenesisOesophageal atresiaExomphalosNeural tube defect  <response>: Ans. is a i.e. Renal agenesis Renal agenesis prevents urine formation which leads to oligohydramnios.Oligohydramnios is condition where amniotic fluid is deficient in amount to the extent of 100ml or entirely absentAetiologyRenal agenesisAmnion nodosumIUGRPost maturityObst. of urinary tract post urethral Valve 