Exam IIA-CIA-Part2 topic 4 question 8 discussion

A payroll clerk enters payroll transactions into the general ledger. The staff accountant reconciles the payroll ledgers. The payroll manager issues the manual payroll checks. The checks are maintained in a locked cabinet. The chief financial officer secures the keys to the cabinet. The payroll clerk distributes the manual checks.
The payroll manager reconciles the bank statements monthly. Which of the following audit steps best addresses the risk of fraud in the payroll process?