A county public health nurse is developing a list of interventions to address the three core functions of public health. Which of the following interventions should the nurse include as part of the assurance function?

Use surveillance to investigate outbreaks of foodborne illness.

Monitor the incidence rates of varicella every 2 months.

Organize an immunization clinic for at-risk members of the community.

Educate the community about the health risks of alcohol use.