The Clinic Nurse Is Working with a Mother and Her

The clinic nurse is working with a mother and her 3-year-old child who have arrived for the child's routine checkup.The nurse encourages the mother to return for her child's measles-mumps-rubella immunization prior to the child's entering school.This intervention is an example of what type of care?

A) Mandatory health care
B) Primary health prevention
C) Secondary health prevention
D) Tertiary health prevention