This is a public service announcement. Two people sharing ear buds on a poster that reads, "Spread Music. Not Flu. Even healthy people can get the flu, and it can be serious. Everyone 6 months and older should get a flu vaccine. This means you. This means protect yourself, and those around you, by getting a flu vaccine." What is the purpose of this public service announcement? to encourage people to spend time with people who have the flu to inform people that they can catch the flu from their friends to inform people that sharing headphones can spread the flu to encourage people to take precautions against catching the flu