Birth weight of 2500 grams-the most common cause of oligohydraminos is an amniotic leak, although it often occurs from renal agenesis, obstructed ureters, cystic kidneys, etc. oligohydraminos results in features from the baby being squeezed by the uterus: flattened face, low set ears, and club feet. without sufficient amniotic fluid, the lungs do not develop properly. hypoplasia and deficient surfactant production (made of phospholipids) will result. answer d is correct because we would not expect a normal birth weight of 2500 grams (or about 5.5 pounds) at 32 weeks, even in the absence of oligohydraminos. another good question would be what is the most likely cause of death after a baby is delivered after an extended period of oligohydraminos? the baby would die from irds.