Final answer:
The preferred route of delivery for a fetus that has died or is previable in the event of cord prolapse is vaginal delivery to avoid the risks of a Cesarean section, which is major abdominal surgery.
Step-by-step explanation:
The preferred route of delivery for a fetus that has died or is previable in the case of cord prolapse is vaginal delivery. A Cesarean section is a surgical procedure used when necessary to safely deliver a living baby, but in the event of fetal death or if the fetus is not viable, the risks associated with major abdominal surgery can be avoided. The process of childbirth generally includes cervical dilation, expulsion of the newborn, and the delivery of the afterbirth or placenta, but in a situation where fetal demise or non-viability is confirmed, the less invasive process of vaginal delivery is typically preferred to minimize additional risks to the mother.