Which of the following objects are not permitted in pages of a Site?

The reason the News Feed is not permitted in the pages of a Site relates to the specific functionality and design of Appian Sites. Sites are designed to present a coherent and structured user interface tailored for specific purposes, focusing on structured interactions and essential application functionalities.

While the other options—Form Components, Reports, and Interface Components—are commonly used within Sites to allow users to interact with application data, enter information, and visualize outputs, the News Feed typically serves as a social or informational tool that provides updates or discussions. This kind of dynamic content is more suited for community-oriented applications or services rather than the organized and task-focused nature of a Site.

In summary, the inclusion of the News Feed would detract from the intended user experience of Sites, which aim for clarity and purpose-specific navigation. By omitting such features, Appian ensures that users can focus on their tasks without the distraction of social information sharing typically associated with a News Feed.