Final answer:
A nurse working to find housing and provide counseling for individuals affected by a hurricane is engaged in secondary prevention, aiming to reduce the impact of the disaster.
Step-by-step explanation:
The nurse's actions in a community that has experienced a hurricane represent secondary prevention in the field of public health. Secondary prevention aims to reduce the impact of a disease or injury that has already occurred. This is done by detecting and treating disease or injury as soon as possible to halt or slow its progress, encouraging personal strategies to prevent reinjury or recurrence, and implementing programs to return people to their original health and function to prevent long-term problems. In this case, the nurse, by finding housing and providing counseling, is actively working to mitigate the immediate health and social impacts of the hurricane on the affected community.