Hi, there! :)
Answer: The most likely answer is B. Public-health nurse.
A public-health nurse provides services to promote:
- health,
- prevent disease,
- and help individuals and communities achieve and maintain optimal health.
They often work in community health clinics, schools, public health departments, and other community settings.
In this case, Greg spends his day providing immunizations to children at a local clinic, which is a typical role of a public-health nurse. They are responsible for:
- administering vaccines,
- educating patients and families about disease prevention,
- and monitoring community health trends.
School nurses may also provide immunizations to students, but they typically work in schools, whereas Greg works in a local clinic. Trauma nurses and critical-care nurses work in hospitals and focus on treating patients with acute injuries or critical illnesses.
Hope that helps! Good luck! ^_^