Answer :
Final answer:
By putting a mask on the flu patient, the nurse interrupted the portal of exit chain of infection, containing respiratory emissions and preventing the spread of the virus. The correct option is 1.
Explanation:
The nurse broke the portal of exit chain of infection by putting a mask on the patient with the flu. The portal of exit is critical in the transmission of diseases, as it is the means through which a pathogen like the flu virus exits its current host.
By wearing a mask, the patient's respiratory emissions, which can include sneezes and coughs, are contained, preventing the transmission of flu virus particles into the ambient air and onto surrounding surfaces, thereby reducing the risk of infecting others.
Hence, Option 1 is correct.
