What safety measure is essential for transporting an inmate with a productive cough?

Using a proper mask or respirator is crucial when transporting an inmate with a productive cough because it helps to prevent the spread of respiratory infections. A productive cough can be indicative of various respiratory illnesses, which can easily be transmitted through droplets in the air when the individual coughs. By wearing a suitable mask or respirator, the risk of exposure to airborne diseases for both the inmate and the transport personnel is significantly reduced.

This safety measure is aligned with standard infection control practices, ensuring that both the health of the inmate and the wellbeing of staff and other inmates are protected during transport. The other choices, such as only providing cough drops or not using any mask at all, do not adequately address the risk of transmission associated with a productive cough, and using a standard medical face shield is insufficient as it does not provide the same level of protection against respiratory droplets.