Final answer:
The nurse should drop the gauze from 6 inches above the sterile field to avoid contamination and maintain aseptic technique.
Step-by-step explanation:
When placing gauze from a wrapped item into the sterile field, the nurse should take action B.) Drop the item from 6 in (15 cm) above the sterile field. This ensures that the gauze does not touch the edges of the wrapper, which are not considered sterile, and minimizes the risk of contamination. It is essential to maintain the aseptic technique throughout the procedure to prevent infection or the introduction of pathogens.