An organization has an ArcGIS Enterprise deployment but does not have access to ArcGIS Online.

ArcGIS Enterprise Sites is a capability within ArcGIS Enterprise that enables organizations to create tailored web pages for sharing data and content. These sites are designed to be user-friendly for non-GIS users, allowing them to interact with, download, and create applications from the organization's data. Since the organization does not have access to ArcGIS Online, ArcGIS Enterprise Sites provides the necessary functionality within their existing deployment.​

ArcGIS Hub (Option A) is a separate product that requires ArcGIS Online. ArcGIS Experience Builder (Option C) is a tool for creating web applications but does not provide the comprehensive site-building capabilities needed for this scenario.​

Reference Source: ArcGIS Enterprise documentation on Sites

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