What is displayed on the search radar scope after decoding?

The correct choice indicates that after decoding, the information displayed on the search radar scope is the coded reply. This means that the radar system has processed incoming signals that were encoded for communication, and by decoding these signals, the radar can present relevant tactical data or responses from identified units.

Decoding is crucial as it allows the radar operator to interpret the signals received from other units or systems, which can include information about their status, identification, or intentions. This capability enhances situational awareness and supports effective decision-making in operational environments.

The other options—friendly units, mission status, and flight path—refer to different kinds of information that might be displayed on a radar scope but do not specifically address what is shown immediately after the decoding process. Instead, those elements may be part of the data that could be included in the coded reply or be displayed through other functions of the radar system but do not directly pertain to the decoding action itself. Therefore, the focus on the coded reply is appropriate as it reflects the specific outcome of decoding the radar signals.