What is an appropriate way to address a group of cadets in a formal setting?

Addressing a group of cadets in a formal setting requires an approach that reflects respect and authority, which is vital in military structure and etiquette. The phrase "Cadets, attention!" is appropriate because it not only acknowledges the audience correctly, using their formal title, but also commands their focus in a direct and respectful manner.

This form of address is standard in military and JROTC settings, where discipline and structure are emphasized. Using "Cadets" instills a sense of belonging and unity among the group, while the command "attention" initiates a proper posture and readiness to listen, aligning with military protocols.

In contrast, the other options lack the necessary formality and respect expected in such environments. Casual greetings undermine the seriousness of the situation and fail to communicate the respect that should be afforded to fellow cadets in a formal context.