A. The Rh-positive factor from the fetus threatens her blood cells: The Rh-positive factor doesn’t directly affect the mother’s blood. However, it can lead to antibody formation against Rh-positive blood, which can cause problems in future pregnancies. B. The mother should receive Rho(D) immune globulin when the baby is Rh-negative: Rho(D) immune globulin is needed when the baby is Rh-positive to prevent the formation of antibodies. It is not required for an Rh-negative baby. C. Rho(D) immune globulin prevents maternal antibody formation for future Rh-positive babies: Rho(D) immune globulin prevents the mother from producing antibodies against Rh-positive blood, reducing the risk of complications in future Rh-positive pregnancies. D. Rho(D) immune globulin is not necessary unless all her pregnancies are Rh-positive: Rho(D) immune globulin is required after any Rh-positive pregnancy to prevent the formation of antibodies, regardless of whether future pregnancies are Rh-positive.