Final answer:
In this situation, the nurse should place the client in a knee-chest position.
Step-by-step explanation:
When a nurse observes the umbilical cord protruding from the vagina during a vaginal exam on a client in labor, the nurse should take the following action:
A) Place the client in a knee-chest position.
This position helps to relieve pressure on the umbilical cord and reduces the risk of cord compression, which can restrict blood flow to the baby