Final answer:
A nurse giving influenza vaccines is demonstrating a primary level of care that is preventive in nature.
Step-by-step explanation:
The nurse volunteering to give influenza immunizations at a local clinic is demonstrating a primary level of care. This level of care involves preventive measures to ward off health issues before they happen, which includes the administration of vaccines to prevent the spread of diseases such as influenza. The primary level of care serves to reduce the incidence of disease within the population at large.
The nurse is demonstrating promotional care. Promotive care focuses on preventing illnesses and promoting overall health. By volunteering to give influenza immunizations, the nurse is helping to prevent the spread of influenza and promote the health of the community.