A mitigation action is a specific action, project, activity, or process taken to reduce or eliminate long-term risk to people and property from hazards and their impacts. Implementing mitigation actions helps achieve the plan’s goals. The actions to reduce vulnerability to threats and hazards form the core of the mitigation plan and are a key outcome of the planning process.
For some ideas of Mitigation Activities see the FEMA publication "Mitigation Ideas: A Resource for Reducing Risk to Natural Hazards, January 2013" at this link:
https://www.fema.gov/media-library-data/20130726-1904-25045-0186/fema_mitigation_ideas_final508.pdfFrom the categories in the drop down list choose the best category for your Mitigation Action. Explanatory examples are given and you can go back if you feel another category fits better.