What does the term "covert" refer to in military operations?

The term "covert" in military operations refers to actions that are secretive in nature, often undertaken to achieve strategic objectives without revealing the operation to those who may be impacted by it or to the broader public. This could involve intelligence gathering, special operations, or other activities that require a level of concealment to ensure success and protect operational security.

Choice B accurately reflects this understanding, highlighting that covert operations often take place over extended periods and rely on discretion and secrecy. Such operations are typically designed to be deniable and may involve sensitive tactics that are not disclosed, maintaining the element of surprise or protecting personnel involved from enemy detection or retaliation.

The other options present contrasting ideas about military operations. For instance, operating openly in public, adhering to strict transparency guidelines, or limiting operations to daylight hours do not align with the fundamental characteristics of covert actions, which prioritize confidentiality and stealth.