Answer :
Base on the following choices, and in understanding the said question which as to choose among them is the most accurate description for law enforcement, and base on the fact, I would say that the answer would be letter C. Law enforcement officers are mainly required to uphold the law. I hope this would help.
I believe the answer is: C. Law enforcement officers are mainly required to uphold the law.
Because of this the scope of action which can and cannot be done by law enforcement is limited in a very strict regulation. If the law enforcement disobey this limitation, the suspect could even sue the law enforcement and all of the charge can be nullified.