Flow Builder is the standard and most versatile tool for performing automated data maintenance, including the deletion of records. A "Schedule-Triggered Flow" can be configured to run at specific intervals (e.g., daily at midnight) to find records that meet certain criteria--such as Leads that have been "Unqualified" for over a year--and use the "Delete Records" element to remove them from the system. While the "Mass Delete Records" tool (Option C) exists in the Setup menu, it is a manual administrative tool and cannot be scheduled or fully automated based on complex field-level logic. Automation Studio (Option B) is a Marketing Cloud tool, not a core Salesforce platform feature for record management. Flow Orchestration (Option D) is used for complex, multi-user business processes rather than simple data cleanup tasks. Therefore, for recurring, criteria-based record deletion, Flow Builder is the recommended solution.