Final answer:
The payroll register reflects all paid payroll liabilities in a financial period and is an essential tool for tracking and managing payroll expenses.
Step-by-step explanation:
The subject of this question is Business and its grade level is College.
The blank that reflects all paid payroll liabilities in a financial period is the payroll register. A payroll register is a document or record that summarizes all payroll transactions for a specific period of time. It includes information such as employee names, wages or salaries paid, deductions, and taxes withheld.
The payroll register is an essential tool for the accounting and human resources departments to track and manage payroll expenses and ensure accurate reporting to tax authorities.