Final answer:
The test used to ensure due process when disciplining an employee is issuing discipline in a consistent and predictable manner. So, the correct option is B) which is issuing discipline in a consistent and predictable manner.
Step-by-step explanation:
The test used to ensure due process when disciplining an employee is option B, which is issuing discipline in a consistent and predictable manner. Due process is the idea that laws must be applied fairly and equally to all. It ensures that employees are treated fairly and given a consistent process when facing disciplinary actions. By issuing discipline in a consistent and predictable manner, employers ensure that employees' rights are respected and that they have a fair opportunity to defend themselves.