Normal Mode/Suppression Enabled is described as the default mode which allows ESM to activate suppression if sufficient link transmissions are occurring to negatively impact ESM performance.

• A. The mode that disables suppression and allows all Link 16 transmissions
• B. The mode where Link transmissions are disabled to protect ESM
• C. The default mode which allows ESM to activate suppression if sufficient link transmissions are occurring to negatively impact ESM performance
• D. The mode that alternates suppression based on time of day

Answer: (C)

Normal Mode with Suppression Enabled represents a protective behavior: the system allows ESM to automatically suppress Link 16 transmissions when the amount of activity is high enough to degrade ESM performance. This default setup keeps ESM sensing effective by reducing emissions only when needed, rather than always blocking transmissions or following a fixed schedule.

The other possibilities would either disable this protective capability, prevent transmissions entirely, or rely on a time-based pattern, none of which matches the described default behavior where suppression can be activated as required by link activity.