Select the name of the correct internal control principle being followed in each case.

Employees are required to take vacations.

Blank checks are locked in a safe.

Each month, the assets on hand are compared to the accounting records by an

internal auditor.

Only one employee operates each cash register.

A prenumbered shipping document is prepared for each shipment of goods to

customers.

A different individual is responsible for ordering supplies than the person who

processes the payment for the supplies.