What does the response code 10-94 indicate?

The response code 10-94 is understood to indicate "Backup." This code is typically used by law enforcement officers to request assistance or additional personnel when they are in a situation where they need support. It ensures that officers can work collaboratively in potentially dangerous or complex situations, enhancing safety and effectiveness during operations.

The other options represent different operational codes that are used in various contexts, but they do not accurately reflect the meaning of 10-94. For instance, "Unable to receive" and "Change Radio Channel" pertain to radio communication issues, while "Assignment completed" refers to the conclusion of a specific task or duty. These codes serve distinct purposes and are crucial for clear communication among law enforcement officers.