Final answer:
To alleviate back pain during labor in a client with a fetus in the right occiput posterior position, the nurse should apply sacral counterpressure.
Step-by-step explanation:
When caring for a client who is in labor and whose fetus is in the right occiput posterior position and experiencing back pain, the nurse should take the following action:
A. Apply sacral counterpressure.
Sacral counterpressure involves applying pressure to the sacrum, which can help alleviate back pain during labor. This technique can be performed by the nurse or the birthing partner and can provide relief by reducing pressure on the nerves in the lower back.