Final Answer:
When an attack is not probable, the alarm condition declared is typically "Normal" or "Green." This signifies that there is no imminent threat, and the security level is considered low.
Step-by-step explanation:
In the context of security or threat assessments, when an attack is not probable, the alarm condition declared is typically referred to as "Normal" or "Green." This indicates that there is no imminent threat or danger anticipated, and the security level is considered low. The use of color codes, such as green, yellow, orange, and red, is common in security protocols to convey the level of threat or alert status.
In the absence of a probable attack, security measures may remain at a baseline level, and personnel may operate under standard protocols. However, it's important for organizations to maintain situational awareness and be prepared to escalate security measures if the threat landscape changes or if there are indications that an attack becomes more probable.