Which feature of Public Sector Solutions enables external users to create their own support requests?

The Experience Cloud site is the correct choice because it enables organizations to create a digital interface where external users, such as citizens or clients, can engage with services offered by the public sector. This feature allows these users to log in and create their own support requests, streamlining the process and empowering users to seek assistance without direct intervention from a staff member.

The other options do not offer this capability. Action Plans focus on managing workflows and processes within the organization, while Data Raptors are utilized for data integration and transformation purposes. OmniStudio comprises a suite of tools mainly for building guided interactions and experiences but does not specifically address the need for external users to submit their own support requests. Thus, the Experience Cloud site stands out as the essential tool for facilitating user-generated support requests.