What should flight attendants do to prevent the spread of illness on board?

Flight attendants play a crucial role in maintaining the health and safety of passengers on board an aircraft. Practicing good hygiene, which includes regular handwashing and the use of sanitizers, is essential in preventing the spread of illnesses. By suggesting the use of hand sanitizers, flight attendants can encourage passengers to take proactive steps in protecting themselves and others from germs.

Hand sanitizers are effective in killing a wide range of pathogens, making them a practical solution in the confined spaces of an aircraft, where the close proximity can facilitate the transmission of illnesses. This proactive approach helps create a safer environment, ensuring that both passengers and crew are taking responsible measures to reduce the risk of contagion during the flight.

The other choices do not effectively address the prevention of illness: providing complimentary medications may not be appropriate or permissible, avoiding close contact with passengers could hinder the ability to provide necessary service, and limiting refreshments could create dissatisfaction among passengers without addressing the primary issue of illness prevention.