Answer: d. all of the above
Step-by-step explanation:
Public employees are generally more protected than private employees. As they fall under the Civil Service, they are protected by civil service laws which require more care for employees than in private employ where employees are less protected.
Government employees employees are also protected by the various constitutional rights bestowed on them. Even though private employees have constitutional rights as well, it is harder to enforce them in private employ than it is in Government employ.
Public employees also enjoy a property interest in their job which means that generally, they cannot be fired without being given a chance to defend themselves especially when they can prove a legitimate entitlement claim. This is in contrast to private employees that can be fired at will.