Some may think that public health systems are only those that are run by the government. This is partly true but other public and private groups are part of the system. This includes schools, nonprofits, and the EPA. The mission of the public health system is to make sure conditions are conducive to keeping people healthy. While this may be difficult, the public health system is dedicated to being proactive. Which of the following sentences from the given text have errors in terms of being a framework for public health?
1) Public health systems are only run by the government.
2) Schools and nonprofits are not part of the public health system.
3) The mission of the public health system is to keep people healthy.
4) The public health system is proactive in ensuring healthy conditions.
