Which of the following best describes 'dining-out'?

The term 'dining-out' specifically refers to a formal military dinner that often includes non-military guests. This event is characterized by its structured environment, where military customs and traditions are observed, including the proper dress code and protocols. It serves as an opportunity for members of the military to socialize and foster relationships both within the military and with civilians, emphasizing the importance of camaraderie, respect, and military traditions.

This distinction sets 'dining-out' apart from the other options. An informal meal shared among friends, a family dinner event, or a casual snack gathering do not encapsulate the formal structure and ceremonial aspects that characterize a dining-out event, where etiquette and military customs take precedence.