You are a benefit administrator.

The correct answer is C because benefit groups in Workday are typically created when distinct populations of workers need different overall benefits structures, often due to major organizational differences such as country, legal entity, or currency. When employees are located in different countries like the United States and the United Kingdom, they commonly have different benefit programs, regulatory requirements, providers, and plan pricing currencies. In that situation, separate benefit groups help organize eligibility and ensure each population is tied to the correct set of plans and configuration rules.

Option A is not the best reason because holding multiple positions does not by itself require separate benefit groups; eligibility is usually managed through worker and job-based rules. Option B is more appropriately handled through plan-level eligibility rules rather than creating an entirely separate benefit group for one age-based condition. Option D concerns differences within medical plan design, such as coverage targets, which can be handled at the plan configuration level rather than by creating separate groups. Benefit groups should be used when broad populations require distinct benefits frameworks, and different countries with different currencies are a strong example of that need.