Final answer:
Opened but unused instrument sets should be completely reprocessed. Reprocessing involves cleaning, disinfecting, and sterilizing the instruments to ensure they are safe for use.
Step-by-step explanation:
Opened but unused instrument sets should be completely reprocessed.
Reprocessing involves cleaning, disinfecting, and sterilizing the instruments to ensure they are safe for use. This process helps to remove any contaminants that may have come into contact with the instruments and ensures they are sterile before being used again.