A client is 37 weeks gestation and is experiencing preeclampsia. The physician has ordered magnesium sulfate, increased fetal surveillance, and increased nursing interventions. The nightshift charge nurse is preparing the patient-nurse assignment before the morning shift begins. Which factors should be the primary factor in the decision surrounding who should care for this client?

client preference the most
senior nurse on that morning shift
complexity of care requirements
continuity: the nurse who cared for the client yesterday