According to Joint Doctrine, how are Rules of Engagement (ROE) defined?

The definition of Rules of Engagement (ROE) as guidelines by military authority for combat engagement is accurate because ROE sets forth the circumstances and limitations under which forces can initiate or continue combat engagement with enemy forces. This definition encompasses a broader scope than just weapon usage, capturing the nuances of the various scenarios in which military personnel may engage. ROE is essential in ensuring that military operations are conducted within the framework of legal and ethical considerations, which includes compliance with international law and the rules of armed conflict. By providing overarching guidelines, ROE helps to govern not only the use of force but also the decision-making process during combat situations, serving to protect both military personnel and civilians.

Other options don't capture the comprehensive essence of ROE; they are either too focused on specific aspects of combat or other military activities that do not pertain to how engagement is governed in a broader operational context.