What radar zone prevents radar from reporting acquisitions around friendly units?

The correct answer is the Censor Zone. The purpose of the Censor Zone is to establish a designated area around friendly units where radar systems are prevented from reporting acquisitions, thereby protecting those friendly forces from potential misidentification or targeting. This is crucial in operational environments where the safety of friendly units must be prioritized, and it helps to minimize the risks of friendly fire incidents by keeping radar systems focused on legitimate threats outside this zone.

In contrast, the other zones mentioned serve different functions related to the observational and targeting capabilities of the radar systems. The Artillery Target Intelligence Zone focuses on gathering information related to potential targets for artillery, while the Call for Fire Zone is used during the process of coordinating fire missions. The Critical Friendly Zone typically refers to designated areas where the presence of friendly forces warrants heightened caution, but it does not specifically prevent radar acquisitions from being reported.