The Aggregator Management Pack controls what data is collected from remote VCF Operations instances through its configuration file, not through policy permissions, object tagging, or an interactive metric selector. The official VCF 9.0 documentation states that when an Aggregator adapter instance is configured, a configuration file must be specified, and that file defines the type of information the adapter instance collects. Therefore, when management requests additional metrics, the administrator must update or create the appropriate federation_config file containing the additional metric/property definitions and then associate that file with the relevant aggregator adapter connections. This ensures the Federation instance receives the expanded data set from each contributing VCF Operations instance. Option A is incorrect because policies influence metric activation, thresholds, alerts, and analysis behavior after data exists, but they do not define the Aggregator collection schema. Option C is incorrect because the Federation instance does not use a simple per-connection metric-pick workflow for this function. Option D is incorrect because tagging resources as “aggregator” is not the mechanism used by the Management Pack. Reference topic: Objective 4.8 – Installing Management Packs and configuring Management Packs / Federation Management Pack / Aggregator configuration files .