Which General Order mandates not to engage in conversations outside of duty?

The correct answer is based on the principles of military conduct and discipline. General Order 7 specifically emphasizes the importance of maintaining professional decorum while on duty. This order instructs service members not to engage in conversations or activities that could detract from their responsibilities and the tasks at hand. By limiting communication to essential matters during duty hours, it ensures that service members remain focused and attentive to their assignments, thereby promoting an effective and efficient military environment.

Other options refer to different aspects of military protocol or behavior that do not specifically address the issue of conversation during duty hours. These varying directives are essential for understandings, such as maintaining a state of readiness and respecting the chain of command, but they do not specifically focus on the prohibition of casual discussions while on duty. This delineation underscores the specific purpose of General Order 7 in promoting discipline and focus among service members.