Carmen is developing a campaign to reduce childhood obesity, by encouraging healthy eating in school cafeterias. She's planning a range of promotional materials to go out to principles, teachers and lunch coordinators to raise awareness of this issue and the variety of options available to increase the healthy lunch options with local businesses. Who is the focal population of the campaign? Carmen is developing a campaign to reduce childhood obesity, by encouraging healthy eating in school cafeterias. She's planning a range of promotional materials to go out to principles, teachers and lunch coordinators to raise awareness of this issue and the variety of options available to increase the healthy lunch options with local businesses. Who is the focal population of the campaign? Principles and teachers Food service vendors Kids Parents