Final answer:
Undercover operations should be used only if there is sufficient probable cause that a crime has been committed.
Step-by-step explanation:
The correct statement regarding the use of undercover operations as part of a fraud examination is option b: Undercover operations should be used only if there is sufficient probable cause that a crime has been committed.
Undercover operations can be an effective tool in fraud investigations, but they must be conducted within the boundaries of the law. Law enforcement agencies are required to have probable cause, reasonable suspicion, or a valid warrant to initiate undercover operations.
Using undercover agents without sufficient legal basis can violate a person's constitutional rights. Therefore, it is crucial that undercover operations are properly authorized and conducted with strict adherence to the law.