Final answer:
D. All of the above
Private investigators, security guards, and businesses are not allowed to use the terms Officers, Police, or Law enforcement. These terms are reserved for the official civil force responsible for maintaining law and order.
Step-by-step explanation:
Private investigators, security guards, and businesses involved in selling private investigators or security guards are prohibited from using the terms Officers, Police, or Law enforcement. These terms are reserved for the civil force responsible for enforcing laws and public order at various levels - federal, state, or community. In the United States, there is no unified national police force, but there are federal law enforcement officers who operate under specific government agencies like the FBI, ATF, and DHS.
Using these terms by non-law enforcement personnel can be misleading and create confusion among the public. It is important to differentiate between private investigators, security guards, and the official police force.