Final answer:
For an intradermal injection, a nurse should insert the needle at a 10 degree angle to deliver the medication just between the skin layers using the bevel-up position of the needle.
Step-by-step explanation:
A nurse preparing to administer an intradermal injection should insert the needle at a 10 degree angle. Intradermal injections are used for skin testing and require a shallow insertion of the needle to ensure the medication is delivered just between the layers of the skin. The correct technique involves the nurse using the bevel-up position of the needle for a small-volume injection and a skin surface that is stretched taut with the non-dominant hand.