You need to define the content database architecture. What should you create?

Organizing content databases by business function for each site collection does not account for the geographic distribution requirements specified in the scenario.

Creating a content database based on geography for each site collection ensures data locality, which improves performance for geographically distributed users and simplifies compliance with regional data residency requirements. Separating content databases by geography also makes disaster recovery and targeted restores more manageable per region.

A single content database for the entire environment creates a single point of failure, limits scalability, and does not support geographic data separation requirements.

Creating databases per business function with site collections by geography inverts the architecture - databases should align to geography, not business function, given the scenario's geographic requirements.