What is the meaning of the code 10-4?

The code 10-4 signifies "Acknowledgment." This means that the person receiving the message understands and accepts the information that has been communicated. In law enforcement communications, clarity and brevity are vital, and using codes like 10-4 allows officers to quickly convey their acknowledgment without needing to provide lengthy responses. This promotes efficient communication, especially in fast-paced situations where every second counts.

The other options represent different meanings that do not align with the established interpretation of 10-4 in radio communications, emphasizing the importance of knowing the correct definitions for various codes within the context of law enforcement operations.