Final answer:
The appropriate actions include administering a dose of Rho(D) immune globulin after delivery to prevent HDN in future pregnancies, and instructing the client to get a rubella vaccine postpartum due to non-immunity. the correct option is d. administer a dose of Pho(D) immune globulin.
Step-by-step explanation:
The most appropriate action for the nurse to take is to administer a dose of Rho(D) immune globulin after delivery. Given the client's blood type O neg (Rh-negative), and the potential risk of hemolytic disease of the newborn (HDN) if she is carrying an Rh-positive baby, a Rho(D) immune globulin injection can prevent the development of Rh antibodies that might harm future pregnancies.
Additionally, the nurse should instruct the client to obtain a rubella immunization after delivery to ensure her immunity for any subsequent pregnancies because the client is rubella non-immune. Although the client is positive for group A beta-hemolytic strep, the administration of antibiotics is typically done during labor to reduce the risk of transmission to the baby, and not continuously until delivery. A caesarean section is not indicated based on the information provided, as the blood types and infections mentioned do not necessitate this intervention.