Which of the following examples illustrates unsafe technique for disposing of contaminated sharps?

This choice demonstrates an unsafe technique for disposing of contaminated sharps because it creates a risk of exposure to personnel and patients. Leaving used suture needles and scalpel blades in the needle counter, even if it is closed, means that these sharp objects could potentially puncture or cut through the container. Additionally, if the needle counter is not designed for waste disposal or is not properly sealed, it increases the risk of accidental contact during handling, transport, or disposal.

Proper disposal protocols require that sharps are disposed of directly in appropriate biohazard sharps containers. This ensures that they are isolated from persons who may come in contact with them outside of a controlled environment. In this scenario, although the needle counter is closed, it does not provide the same level of safety or compliance with standard practices as an immediate disposal into a biohazard container would. The other options illustrate safer disposal methods that comply with regulations and best practices in surgical settings.