Which of the following complications should the nurse include?

The correct answer is C: Newborn hypoglycemia. This complication should be included because infants born to mothers with gestational diabetes are at risk for hypoglycemia due to the abrupt decrease in glucose supply after birth. The other options are not directly related to gestational diabetes. A (Small for gestational age) is a condition where the baby is smaller than expected, not necessarily due to gestational diabetes. B (Oligohydramnios) is a low level of amniotic fluid, which is not typically a complication of gestational diabetes. D (Placenta previa) is a condition where the placenta partially or completely covers the cervix, unrelated to gestational diabetes.