Final answer:
The Trendelenburg position should never be used for a laboring patient.
Step-by-step explanation:
The position that you should never put a laboring patient in is Trendelenburg. The Trendelenburg position involves the patient being laid flat on their back with their head lower than their feet. This position is usually used to increase blood flow to the brain, but in a laboring patient, it can cause complications and should be avoided.