Which situation would require immediate hand washing?

Immediate hand washing is crucial following sneezing, as it helps to eliminate any potential pathogens that may be present on the hands after this action. Sneezing can expel droplets that carry viruses and bacteria, which can then be transferred to surfaces or individuals if proper hygiene measures are not taken. By washing hands immediately after sneezing, one minimizes the risk of spreading infectious agents and maintains a safer environment for oneself and others.

In contrast, while checking emails, eating lunch, or removing a mask may require hand hygiene, they do not carry the same immediate health risk associated with respiratory droplets and potential contamination. Therefore, the urgency of hand washing after sneezing is paramount in preventing the spread of illness.