Northern Trail Outfitters (NTO) wants to set up distinct marketing channels for its North American...

The critical word is initial . Marketing Cloud Next Business Units provide organizational separation for regions, brands, product lines, or other marketing divisions, but their data isolation is enforced through Data 360 Data Spaces. Salesforce establishes a one-to-one relationship between a Business Unit and a Data Space: a Business Unit can map to only one Data Space, and that Data Space can't be associated with another Business Unit.

More importantly, Salesforce's Business Unit setup instructions specify that before creating the initial Business Units, the organization must already have two or more Data Spaces . Therefore, for North American and European environments requiring segregation, the consultant first establishes the separate Data Spaces. The Business Units can then be created and mapped to those unique Data Spaces, with their associated marketing workspaces and content.

Option B represents an important subsequent configuration but isn't the prerequisite initial step. Option C addresses content organization but by itself doesn't establish the required data boundary.

The master bank likewise identifies A.

Study Guide Reference: Platform Setup and Governance → Business Units in Marketing Cloud Next → Data Spaces and Business Units.

===============