Sky, why 2? https://help.salesforce.com/s/articleView?id=sf.xorg_subscriber_provider.htm&type=5 even each license gives 5 https://help.salesforce.com/s/articleView?id=sf.platform_connect_license.htm&type=5
And how would you maintain the datastore, synced on real-time?

A
Its talking about multiple orgs and a 360 view of customer. Means single source of truth. Cross-org adapter is between two orgs and with external objects.

Answer is B. Salesforce Connect allows you to integrate and view data from multiple Salesforce orgs without physically consolidating the data. It provides a real-time view of data residing in different Salesforce instances, enabling a unified and comprehensive perspective on customers across all orgs. This solution avoids the need for data duplication or a centralized datastore while still providing the desired consolidated view.