In the event of a File Store process failure, what action is suspended?

When the File Store process fails, it specifically impacts the copying of extract files to and from the node. The File Store is responsible for managing and storing extract files in Tableau Server. If this process encounters a failure, it prevents any operations that involve moving or accessing extract files, which can lead to issues with data freshness and availability.

While other processes related to data retrieval, backup actions, and cluster communication may potentially experience issues due to the overall environment's health, the primary and immediate action that is suspended directly relates to the functionality of the File Store itself. This is crucial because extract files are a core part of Tableau’s ability to present data efficiently, and their management is handled explicitly by the File Store process. Thus, option B accurately reflects the direct implications of a File Store process failure.