Choice A rationale:

Wearing gloves and a gown while in contact with the patient is essential, but it does not address the potential airborne transmission of Ebola virus.

Choice B rationale:

Ensuring that the patient's visitors wear a mask is important, but it does not directly address the isolation and containment of the virus within the hospital environment.

Choice C rationale:

This is the correct answer. Placing the patient in a room with negative pressure airflow helps prevent the spread of contaminated air to other areas of the hospital. It reduces the risk of airborne transmission of the virus, which is crucial in containing the disease.

Choice D rationale:

Avoiding the use of hand sanitizers to prevent the spread of the virus is not a recommended precautionary measure. Hand hygiene, including the use of hand sanitizers, is still crucial in preventing the spread of infections, including Ebola.