Which method can supplement level I work sampling for tasks that do not occur within the sampling period?

An operational audit is a method that can effectively supplement level I work sampling for tasks that don’t occur within the defined sampling period. This approach focuses on examining and evaluating existing policies, procedures, and controls of an organization's operations. During an operational audit, analysts can gather comprehensive information about tasks and processes that might not have been captured in the work sampling period.

Through this audit, evaluators can identify inefficiencies, areas for improvement, and gain insights into tasks that may not have been observed directly or recorded during regular sampling. This makes operational audits valuable for understanding the broader performance context of the organization, ensuring that all critical tasks, even those infrequently performed, are considered and assessed for operational effectiveness.

The other methods, while useful in various contexts, do not specifically address the need to capture data on infrequent tasks that fall outside standard sampling periods.