Which Analytics 360 feature would you use to create a new data set by combining data from multi-source properties to get a broad view of your business across brands, products, or regions?

Analysis of Correct Answer(s) - Roll-up properties are the correct answer. This is a specific feature of Google Analytics 360 designed precisely for the purpose described. It allows you to combine and aggregate data from multiple source properties into a single, new property. This provides a high-level, consolidated view of user behavior across different websites or apps, which is ideal for analyzing performance across various brands, product lines, or geographic regions.

Analysis of Incorrect Options - Subproperties: This Analytics 360 feature does the opposite of a roll-up. A subproperty creates a filtered subset of data from a single source property. It is used to limit data access for certain users, not to combine data from multiple sources. - Organizations: An organization is the highest level in the Google Marketing Platform account hierarchy. It's an administrative tool for managing company accounts, users, and billing, but it does not combine or aggregate property-level data for analysis. - Data streams: A data stream is a source of data flowing into a single Google Analytics 4 property (e.g., a website or a mobile app). While a property can have multiple data streams, this feature itself does not combine data from entirely separate properties.