Which 10 code signifies an affirmative response?

The code that signifies an affirmative response is 10-4. This code is widely recognized in law enforcement and emergency services as a way to acknowledge a message or confirm receipt of information. Using 10-4 establishes clear communication, indicating that the receiver understands and agrees with the message conveyed.

The other codes listed serve different purposes within the 10-codes used by law enforcement. For instance, 10-9 typically means "repeat," which is used when clarity is needed regarding a previous message. 10-6 indicates that an officer is busy, and 10-10 can mean "negative" or "transmission completed." Understanding these distinctions can enhance effective communication within police operations.